My block is screwed isn't it.... - LS1GTO.com Forums

Vendors


Go Back   LS1GTO.com Forums > GTO Tech > LS1/LS2 Engine Tech

Reply
 
Thread Tools Rate Thread
Old 11-10-2012, 02:59 PM   #1
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
My block is screwed isn't it....

Many of you have been following along my previous threads discussing the issues I have been having with my built 347.

To sum up, it was burning oil from 2 cylinders. The plugs in those cylinders would foul within 30 miles.

I got to the bottom of it tonight. Ran a compression check...was perfectly fine. Did a quick leak down test by spraying air into the chamber and did not hear it in the pan. I was actually happy at this point and was hoping it was something in the head.

NOPE

Got the head off, and those cylinders have DEEP gouges running vertically the entire bore. When you feel the bore, it feels like you are reading brail. The other 6 cylinders feel great by comparison. I am already running slightly overbored at 3.905. The max you can bore an LS1 is for 3.908 pistons so I am pretty sure this block is screwed and cannot be saved but maybe you guys have a better idea.

Looks like I am smurfed. Andrew gave me a deal on that block since he is a friend at only $300. No way I will find another that cheap. I know the machine shop will try to avoid liability since it is now more than just a simple rehone and rering (they said they would cover that on their dime based on our previous discussion before we knew exactly what was wrong).

It is now a $600-800 dollar mistake....I only paid them $1800 for this job.

In b4 Mike ends up paying over 5Gs for a simple forged 347.


CURSE ME FOR NOT DRIVING THE 200 MILES TO ANDY. That would have been a minor inconvenience but it would have been done right. Yay I am now a cautionary tale. Learn from my mistake...go to only people you know and trust.
__________________
'99 FRC
No longer wanting to light the car on fire
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-10-2012, 03:06 PM   #2
Tardi
Banned
 
2004 GTO Owner

Join Date: Mar 2010
Location: Chi
Posts: 1,274
Premium Member


Offline
Man that sucks to hear.
  Reply With Quote Quick reply to this message
Old 11-10-2012, 04:58 PM   #3
mike27408
MotorWrecker
 
mike27408's Avatar
 
2005 GTO Owner

Join Date: Nov 2007
Location: Greensboro
Posts: 324


Offline
ive been there man...sorry to hear it...
__________________
2005 GTO QSM,418" NaturallyAspirated,Bullet Racing cam,243 heads,6speed,Kooks 1-3/4" headers w/cats,matchported FAST 102,NW 102mm,3.73 gearsPB in 1/8th 7.76@97 on Firestones with 1.97 60'
Tick Performance tuned
522 RWHP/501 RWTQ
  Reply With Quote Quick reply to this message
Old 11-10-2012, 05:02 PM   #4
DJJONESIVS
Registered User
 
DJJONESIVS's Avatar
 
2006 GTO Owner

Join Date: Mar 2009
Location: Wethersfield CT
Posts: 3,653


Offline
realistically how poorly was this motor running?
__________________


2006 M6 PBM 18'S
1 OF 1124
THE MOST COMMON 2006 GTO EVER
  Reply With Quote Quick reply to this message
Old 11-10-2012, 05:21 PM   #5
Wang
Banned
 
Wang's Avatar
 
2006 GTO Owner

Join Date: May 2006
Location: Censured
Posts: 9,083
Premium Member


Offline
Willl there be another Northeast Cannonball to your place then, for an engine block coffee table ? That sucks, mchicia1.

I'm a dufus on this but there are stories on the 'webz and overbore pistons available out to 4.002 for use on iron blocks. But moreover junkyard iron LQ9 blocks are el-cheapo and might be an option.

Good luck however it works out
  Reply With Quote Quick reply to this message
Old 11-10-2012, 06:03 PM   #6
workman482
Premium Member
 

Join Date: May 2012
Location: Ozark, AL
Posts: 121
Premium Member


Offline
Judging by the color and fouling of the plugs\in his previous thread, I would imagine pretty poorly after 30 miles or so.
__________________
Overwhelming violence is the final answer.
  Reply With Quote Quick reply to this message
Old 11-10-2012, 06:29 PM   #7
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
Quote:
Originally Posted by DJJONESIVS...View Post
realistically how poorly was this motor running?

The car itself ran ok. Had power. But I burned a quart in 500 miles and my plugs were fouling if I didn't get on it often enough.

Motor has to come out. Motivation going down the shitter....

So hard to find a good machinist.
  Reply With Quote Quick reply to this message
Old 11-10-2012, 06:30 PM   #8
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
Quote:
Originally Posted by Wang...View Post
Willl there be another Northeast Cannonball to your place then, for an engine block coffee table ? That sucks, mchicia1.

I'm a dufus on this but there are stories on the 'webz and overbore pistons available out to 4.002 for use on iron blocks. But moreover junkyard iron LQ9 blocks are el-cheapo and might be an option.

Good luck however it works out

Not a bad idea on the iron block, but I don't think they make 5.7 iron blocks do they?
  Reply With Quote Quick reply to this message
Old 11-11-2012, 05:20 AM   #9
87LC2
Dr. Mantis Toboggan
 
87LC2's Avatar
 
2006 GTO Owner

Join Date: Sep 2006
Location: Pennsyltucky
Posts: 13,018
Premium Member


Offline
Smurf!

Quick search on ebay shows several aluminum Ls1 blocks under $500, don't know how much it is to sleeve your two cylinders.


Smurf!
__________________
The Anti-Prius™
2008 JSB/Black M6 1LT
Kooks, catless, NPP
Vararam
  Reply With Quote Quick reply to this message
Old 11-11-2012, 05:29 AM   #10
sam5828
Registered User
 
sam5828's Avatar
 
2004 GTO Owner

Join Date: Aug 2012
Location: Kenton ohio
Posts: 301


Offline
i just seen one for $200 i think it was on here. but cant remember could of been craigs list. use adhuntr.com and you search all of cl at once.
__________________
437RWHP / 379TQ
CNC ported/polished 806 heads with stainless valves and Patriot Extreme dual valve springs

- GT1-1 Camshaft

- Ported/Polished throttle body

- Lingenfelter air intake

- 160 degree thermostat

- Kooks stainless headers

- Magnaflow exhaust no cats Xpipe

- Monster Stage 3

- 4.10 Gear

- Drag Bags/ Anti wheel hop axles

  Reply With Quote Quick reply to this message
Old 11-11-2012, 05:43 AM   #11
batboy
cave dweller
 
batboy's Avatar
 
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,237


Offline
Quote:
Originally Posted by mchicia1...View Post
Not a bad idea on the iron block, but I don't think they make 5.7 iron blocks do they?

Lots of iron 5.7 motors running around, especially in trucks. What they do is take a iron 5.3 block and bore it out to LS1 size and use a LS1 rotating assembly. Thompson Motorsports is a good example of a machine shop that does this, they sell various assembled short blocks (one for less than $2k with forged pistons). They also sell assembled iron 370 short blocks with regular pistons or forged. TMS has a good reputation over at LS1Tech.
__________________
2004 torrid red with red interior A4 GTO (1 of 499)

TR-230/236 cam/TEA ported Trick Flow 215 heads/4" CAI/100mm MAF/ported FAST 90/Kooks/Magnaflow
Performabuilt trans/3200 stall/Truetrac/Gforce1320 half shafts, stubs, CF driveshaft/SSR wheels/SNL tune

Last edited by batboy; 11-11-2012 at 05:48 AM.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 05:51 AM   #12
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
I totally forgot you can take a 5.3 aluminum block and bore that out. I will have them buy me one of those. They are about $200.

Thanks for the brainstorming guys. I want to stay with aluminum though. Good thing the 5.3s are cheap either way.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 06:03 AM   #13
batboy
cave dweller
 
batboy's Avatar
 
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,237


Offline
You can't bore out a 5.3 aluminum block, they are sleeved just like a 5.7 aluminum block. You can have a 5.3 resleeved and make it into a 427 though. But, it's not cheap.

Thompson sells assembled aluminum LS1 short blocks too.

Last edited by batboy; 11-11-2012 at 06:07 AM.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 06:59 AM   #14
6PntHo
Registered User
 
6PntHo's Avatar
 
2006 GTO Owner

Join Date: Jan 2009
Location: Jacksonville, FL
Posts: 2,742


Offline
Damn man, sorry bout all of that.
__________________
06 PBM 1 of 803... RIP. 1/13/13

04 Cosmos... 1 of 377... stock rebuilt ls1.. 325/332

06 BOM 1 of 340... Stawk
346/357... 13.1@106
Revised 402 coming soon... MAYBE...
  Reply With Quote Quick reply to this message
Old 11-11-2012, 07:28 AM   #15
sam5828
Registered User
 
sam5828's Avatar
 
2004 GTO Owner

Join Date: Aug 2012
Location: Kenton ohio
Posts: 301


Offline
Quote:
Originally Posted by mchicia1...View Post
I totally forgot you can take a 5.3 aluminum block and bore that out. I will have them buy me one of those. They are about $200.

Thanks for the brainstorming guys. I want to stay with aluminum though. Good thing the 5.3s are cheap either way.

Here ya go $200 May get lucky and he still has it i dunnow.
http://www.ls1gto.com/forums/showthr...ight=ls1+block

Last edited by sam5828; 11-11-2012 at 07:48 AM.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 07:30 AM   #16
svede1212
Growing up is an option
 
svede1212's Avatar
 
2004 GTO Owner

Join Date: Feb 2004
Location: Grand Rapids, Michigan
Posts: 16,158
GVHJ4N
Premium Member


Offline
That sucks. I'd check on resleeving those two cylinders first.
__________________
.




"It's a well know fact that after you hit 400 HP you have to go with split dual exhaust like the LS2 GTOs. The '04s could get away
with single side because they were only 350 HP. With 400 HP and beyond the car wants to turn right at WOT from the thrust."
  Reply With Quote Quick reply to this message
Old 11-11-2012, 08:08 AM   #17
slimbobaggins
Let's roll
 
slimbobaggins's Avatar
 
2005 GTO Owner

Join Date: Oct 2009
Location: Va Beach
Posts: 3,069
Premium Member


Offline
Quote:
Originally Posted by Wang...View Post
But moreover junkyard iron LQ9 blocks are el-cheapo and might be an option.

Used to be that way before the word got out on what a great deal they were, but not so much anymore. I haven't been able to locate a LQ4/9 block within reasonable distance of me that wasn't >= $800, and I don't consider $800 el cheapo.
__________________
757 GTO Owners Association of Tidewater

http://www.757goat.org/phpBB3/index.php


Quote:
Originally Posted by CoolAid...View Post
Shaking/vibrating/rattling more is actually a bonus to me. I enjoy the Parkinsons effect at a stop light while the car belches out fumes of unburnt fuel from its monster lopey overlap. To me, thats muscle car.

Mods: ARP hardware
  Reply With Quote Quick reply to this message
Old 11-11-2012, 08:20 AM   #18
slimbobaggins
Let's roll
 
slimbobaggins's Avatar
 
2005 GTO Owner

Join Date: Oct 2009
Location: Va Beach
Posts: 3,069
Premium Member


Offline
Actually, here's a deal that's fairly rare for being within reasonable driving distance:

http://washingtondc.craigslist.org/m...382068615.html
  Reply With Quote Quick reply to this message
Old 11-11-2012, 08:43 AM   #19
Hugemoose2005
Registered User
 
Hugemoose2005's Avatar
 
2005 GTO Owner

Join Date: Jul 2012
Location: Bensalem, PA
Posts: 334


Offline
Jesus Mike, this sucks. Maybe you should take up knitting..... I hear it's much cheaper hobby.
__________________
2005 PBM M6 Red interior GTO
-CNC ported LS6 heads
-HPE-C cam
-SLP Under-drive pulley
-Stage 2 ported intake and TB
-Insulated Vararam
-Gforce stage 2 anti-hop axles
-ARH 1 7/8 Long tubes and high flow cats
-custom exhaust with x-pipe and 3" powersticks
-GMM race shifter
-Pedders street 1 bushings
-Monster stage 3 clutch and classic hardline
-3.91s, Diff technics diff, Gforce stubs
-370mm Lovells rear springs

455RWHP/411RWTQ
1/4 mile = embarrassing @ 116mph
  Reply With Quote Quick reply to this message
Old 11-11-2012, 12:15 PM   #20
MuhThugga
Poppycock
 
MuhThugga's Avatar
 
2004 GTO Owner

Join Date: Jul 2005
Location: Hockessin, DE
Posts: 10,202


Offline
Sorry to hear that, Mike.

Maybe consider just sticking a 5.3 or a 4.8 in there? You can get a very nice build within your power goals with one of those motors. They're also kind of throw-away motors in the sense that if you blow it up, you can buy a complete long block for less than it would cost to fix the damaged one.

Especially with the longer rods of the 4.8, you can have a very stout bottom end with just ARP rod bolts being the only upgrade. My sister's boyfriend has a 5.3-swapped Chevelle that had about 130,000 miles on it BEFORE he started pushing 8 PSI through it. Motor is still going strong. He has another one sitting on a stand ready to go in when that one blows up.
__________________

PROJECT SILVERBACK IS COMPLETE!!!
Quote:
Originally Posted by MVDCGTO...View Post
Squeezing another 50 rwhp out of one of those setups would be like trying to squeeze the sarcasm out of MuhThugga. . . . . . . . not gonna happen

Quote:
Originally Posted by 87LC2...View Post
A Prius is a vehicular dunce cap.

  Reply With Quote Quick reply to this message
Old 11-11-2012, 12:24 PM   #21
Hugemoose2005
Registered User
 
Hugemoose2005's Avatar
 
2005 GTO Owner

Join Date: Jul 2012
Location: Bensalem, PA
Posts: 334


Offline
That's not a bad idea. You wanted to boost your car eventually anyway right? Grab a 5.3 block, build it and boost the hell out of it. Certainly much cheaper to replace the block in case the next engine builder sucks too.

I know of a good shop but it's sort of far away from you. It's a one man show up in boyertown, pa.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 03:44 PM   #22
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
Quote:
Originally Posted by batboy...View Post
You can't bore out a 5.3 aluminum block, they are sleeved just like a 5.7 aluminum block. You can have a 5.3 resleeved and make it into a 427 though. But, it's not cheap.

Thompson sells assembled aluminum LS1 short blocks too.

Why does Texas Speed use new 5.3 blocks for their ls1 builds then? Something I am missing?

http://www.texas-speed.com/p-3537-ts...ort-block.aspx


As for the idea of throwing a 5.3 in, I have $3400 into this motor already. What happens to that? I need to try to salvage this as I am already heavily invested. I am meeting with the builder tomorrow morning to give him the news, I am crossing my fingers he stands by his work.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 03:47 PM   #23
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
Knitting is a great idea LOL. I already retired from drag racing...the only times my cars have ever had issues either broke directly at the track, or shortly after. The GTO was 10,000 miles on the cam with no signs of any issues. Broke the rear then shortly after it had lifter issues. The vette had almost 25k miles with zero issues. Took it to the track, popped the piston then shortly after popped the tranny.

I am retiring my daily drivers from ever seeing the track. If I ever want to go again, I am building a dedicated car for it.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 04:16 PM   #24
batboy
cave dweller
 
batboy's Avatar
 
2004 GTO Owner

Join Date: Feb 2005
Location: Kansas
Posts: 7,237


Offline
I see what you are talking about. Texas Speed does say this:

Quote:
The TSP Street Racer 347 short-block will use a new GM Gen-III, LS1-style 5.3L aluminum block that is bored to 3.903".

Presumably, that's a mistake, because I found numerous other references to state otherwise:

Quote:
5.3L truck: The cast iron blocks have thick walls so they can be bored up from the 4.8L/5.3L standard bore of 3.779" to 3.893" to make them into a 5.7L standard bore block if the additional weight of the iron block isn't an issue, but the aluminum blocks shouldn't be bored over .010" according to GM.

There seems to be conflicting info on LS1 Tech, although a couple people over there claim to have done it.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 04:49 PM   #25
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
  Reply With Quote Quick reply to this message
Old 11-11-2012, 04:50 PM   #26
Jaime Lannister
Registered User
 
Jaime Lannister's Avatar
 

Join Date: Apr 2009
Location: Casterly Rock
Posts: 8,468


Offline
Uploaded a nice and big pic so you guys can see the epic fail.

What was odd. The head chamber from these two cylinders was extremely clean. Why would that be?
  Reply With Quote Quick reply to this message
Old 11-11-2012, 07:58 PM   #27
Cwarta
MO POWA!
 
Cwarta's Avatar
 
2004 GTO Owner

Join Date: Oct 2011
Location: Elm Creek Ne
Posts: 1,702


Offline
Wth would cause that in such a short time. Possible the ring gaps are to tight?
__________________
2004 GTO M6 QSM
416 forged stroker lq9 block - Callie's crank - eagle rods
Custom FTI cam, Vic Jr, borla, Tick lvl 2 T56
McLeod rst - prostars - tires - Qa1 coil overs
Custom 4 link 9" SRA

1970 SS Nova - 362ci swapped Lt1 - Cam- t56 - 3:73's - borla - 2,800lbs
  Reply With Quote Quick reply to this message
Old 11-11-2012, 09:22 PM   #28
lumpy46
Registered User
 
lumpy46's Avatar
 
2005 GTO Owner

Join Date: Dec 2009
Location: Arizona
Posts: 159


Offline
either something was inside that motor or the skirt clearance was was way to tight...
__________________

Lots of suspension upgrades from Kollar Racing, G-Force driveshaft and diff build, GMM, Magnaflow and more as money permits...
  Reply With Quote Quick reply to this message
Old 11-11-2012, 09:50 PM   #29
dreadpirateroberts
...a wolf who sends flowers
 
dreadpirateroberts's Avatar
 
2005 GTO Owner

Join Date: Sep 2006
Location: NWI
Posts: 21,401
Premium Member


Offline
that sucks man.
  Reply With Quote Quick reply to this message
Old 11-11-2012, 11:09 PM   #30
TheRocket
I Wanna Go Fast
 
TheRocket's Avatar
 
2005 GTO Owner

Join Date: Sep 2010
Location: El Paso, TX
Posts: 2,339


Offline
Sorry to see all that nasty damage OP!

Any word or thoughts on what might have caused this to happen? I see a few members have mentioned rings being an issue?
__________________

2005 Pearl Orange Metallic
PB:12.98@107.1mph
LS3 Intake/Heads - Comp Custom Grind Cam 224/230 .609/.609 113+2 - FTI 3200 Triple Disc - Svede - Lunati - Katech - Cometic - GMPP - SLP - Kooks - MagnaFlow - BC 8/10k Coilovers - Pedders - Whiteline - DBA - Hawk - TSW Cadwells - Goldilocks Splitter - Maverick Man Carbon Spoiler - Morimoto - 06 Tails - Elemental Designs Nine.1 Amp - Phoenix Gold - Hybrid Audio - TC Sounds - Kenwood
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the LS1GTO.com Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 05:04 PM.




Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©2003-2008, LS1GTO.com
Site Banner Design ©2005-2007, Cylosoft

LS1GTO.com is not affiliated with General Motors Corp.