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Old 01-20-2013, 04:05 PM   #1
SpiceredLS2GTO
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high mileage gto with a supercharger

I'm looking to hopefully buy a supercharger in the upcoming months but i'm afraid that my car has to many miles (93,000). The supercharger system i'm looking for is a tvs 1900 and i would only want like 450rwhp-500rwhp. Would this be safe on my stock bottom end and mileage where it is? I couldn't find a thread on this but if you know of one please list it.
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Old 01-20-2013, 04:10 PM   #2
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I've been blown from 110,000 to 157,000 miles. 9 psi from an M112 and 430/460 at the wheels.

In my opinion it's a ticking time bomb, but for now, she's good.

Take that for what it's worth.
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Old 01-20-2013, 05:10 PM   #3
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The best thread to read is the Stock Bottom End thread which is below:

http://www.ls1gto.com/forums/showthread.php?t=401429

I agree with the comments above that in reality it is a bit of a ticking time bomb but if setup safely it "could" last a long time.

Personally my car is on that list with the M122 blower going on at 59k miles and it's currently at 115k miles and still going strong on the stock LS1 bottom end. I've also ran some 10 second passes with the same combo so it can work but each car and engine is different so go into it knowing that it could all end badly just in case lol.
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Old 01-20-2013, 05:18 PM   #4
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haha that is what im afraid of the car is my dd so if it goes badly than im screwed screwed.
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Old 01-20-2013, 05:54 PM   #5
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Get a beater that can handle dd duty before you undertake the project.
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Old 01-21-2013, 05:42 AM   #6
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I don't think it's much of a ticking time bomb at all if you keep it at 500/500 or less. I've seen high mileage motors go way higher and last for years. Swap your valve springs and get the blower
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Old 01-21-2013, 06:21 AM   #7
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Re: high mileage gto with a supercharger

As much as a 2004 GTO
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Old 01-21-2013, 06:42 AM   #8
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What makes it so dangerous to put a blower on a higher mileage car anyway? If something went wrong would it be detrimental like something to the crank?
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Old 01-21-2013, 06:56 AM   #9
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Tolerances tend to loosen with higher cycles. So now you have an engine that's not as tight as it once was. Then you add more pressure to the whole system. Sometimes this can cause issues with rod bolts stretching, or in severe cases bearing failure. Also, it could be a manufacturing defect in a part that at the current engine stresses it's not a problem. As soon as you increase the stress in the rotating assembly, you might find a weak point.

It's always a gamble.

I think it's largely dependent on how the engine spent its life previous to forced induction. Good preventative maintenance, and lack of abuse are paramount. Mine had oil changes every 3-4k miles from 18,000 miles on. Always warmed up before being beat on.
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Old 01-21-2013, 07:15 AM   #10
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I'm the third owner of the car unfortunately but something that gives me hope is when I bought it there was not a single mod on the car besides a borla catback. So this guy either sold all of his parts and did everything or it has never been modded.
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Old 01-21-2013, 07:18 AM   #11
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Soup up your only car?

Brilliant.
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Old 01-21-2013, 07:29 AM   #12
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Re: high mileage gto with a supercharger

I tried to soup up my car once but I used Progresso Light. Not enough salt. Didn't make much horsepowerz.
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Old 01-22-2013, 08:34 AM   #13
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Quote:
Originally Posted by SpiceredLS2GTO...View Post
I'm the third owner of the car unfortunately but something that gives me hope is when I bought it there was not a single mod on the car besides a borla catback. So this guy either sold all of his parts and did everything or it has never been modded.

If its in good shape your fine,ive never heard of anyone taking off there supercharger when they get to 100,000. I have 170,00 on my Harley truck with the 112,no issues.
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Old 01-22-2013, 08:43 AM   #14
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Quote:
Originally Posted by mistermike...View Post
Soup up your only car?

Brilliant.

+11ty

If its your daily driver, dont do it.

Instead, budget $2000 for a DD beater.
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Old 01-22-2013, 08:56 AM   #15
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Quote:
Originally Posted by G-T-O...View Post
How much a blower running for?

Quote:
Originally Posted by Tacos from your dike landlords...View Post
As much as a 2004 GTO


quoted for hilarity.
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Old 01-23-2013, 04:51 AM   #16
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Quote:
Originally Posted by Brett SS...View Post
The best thread to read is the Stock Bottom End thread which is below:

http://www.ls1gto.com/forums/showthread.php?t=401429

I agree with the comments above that in reality it is a bit of a ticking time bomb but if setup safely it "could" last a long time.

Personally my car is on that list with the M122 blower going on at 59k miles and it's currently at 115k miles and still going strong on the stock LS1 bottom end. I've also ran some 10 second passes with the same combo so it can work but each car and engine is different so go into it knowing that it could all end badly just in case lol.

Good advice, my car was a Daily for about 5 years. My current DD is a less reliable 20 year old Jaguar XJ..
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Old 01-23-2013, 04:58 AM   #17
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Quote:
Originally Posted by G-T-O...View Post
How much a blower running for?

There is a M112 in the F/S section for 4K.
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Old 01-23-2013, 05:13 AM   #18
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EDIT..seen it

OP,
Been there and done that...many times. What I can say is that if you have money aside for the "worst case scenario" smurf it. If this is not you,then I would stick to just N/A mods and be happy with the car until you can make plans for a bigger project.
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Old 01-23-2013, 05:25 AM   #19
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Quote:
Originally Posted by johnwins...View Post
There is a M112 in the F/S section for 4K.

Daaaammmnnnnnn, taking my shit off and selling it right now to upgrade to a 1900.
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Old 01-23-2013, 08:28 AM   #20
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11K miles in three years with no problems other than needing tires more often. Taking mine off to install the UPP kit shortly.
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Old 01-23-2013, 08:49 AM   #21
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I have 114k on mine and Im planning to do a TVS after a year or so of N20.
Its my daily, but I have another way to work if need be.
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Old 01-23-2013, 09:05 AM   #22
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Yeah, as long as you're not "on it" every time you drive to/from work you'll be fine. HotRod did a write up on installing a Chinese (eBay) turbo on a junk yard 5.3 with like 150k on it and they said that with the wear of the mileage that it made a good candidate for boost since the cylinders have worn out some to make room for the expanding charge. These aren't engines of the 70's, they're built much more precise which in turn last much longer. We just have the stigma that 100k is death for an engine.
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Old 01-23-2013, 09:18 AM   #23
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HotRod did a write up on installing a Chinese (eBay) turbo on a junk yard 5.3 with like 150k on it and they said that with the wear of the mileage that it made a good candidate for boost since the cylinders have worn out some to make room for the expanding charge.

Yeahhhhhh, no.
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Old 01-23-2013, 10:09 AM   #24
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they said that with the wear of the mileage that it made a good candidate for boost since the cylinders have worn out some to make room for the expanding charge.

What bro? You're gonna end up in my sig along with this other brilliant quote...
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Old 01-23-2013, 10:23 AM   #25
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Yeahhhhhh, no.

awfully angry today
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Old 01-23-2013, 10:28 AM   #26
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It is critical that you make sure it is functioning and running right before you slap the blower on.

Do a compression check on each cylinder
inspect the entire engine area for leaks
check for any blow-by comming out of the oil cap
inspect the motor mounts by eye and by reving
inspect the TB, make sure it is working correctly
Get it up on the lift and inspect and feel the driveline

Anything else anyone wants to add ^

I don't Think 93k is to much for a blower as long as everything it in tip top shape and you don't go out everyday rapping it out to 6-7k.
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Old 01-23-2013, 11:09 AM   #27
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I don't Think 93k is to much for a blower as long as everything it in tip top shape and you don't go out everyday rapping it out to 6-7k.

Pretty much what I do every time this car gets started.

The little LS1 keeps impressing.
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Old 01-23-2013, 12:09 PM   #28
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Inspecting the engine before doing fi is a great idea i would also recommend doing that as well.
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Old 01-23-2013, 12:22 PM   #29
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It should be good any car will blow depending on the abuse i have an 06 m6 with h/c/i and supercharged on 8psi it runs strong with 120k miles
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Old 01-27-2013, 11:48 PM   #30
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Quote:
Originally Posted by hotrodlinc...View Post
Yeah, as long as you're not "on it" every time you drive to/from work you'll be fine. HotRod did a write up on installing a Chinese (eBay) turbo on a junk yard 5.3 with like 150k on it and they said that with the wear of the mileage that it made a good candidate for boost since the cylinders have worn out some to make room for the expanding charge. These aren't engines of the 70's, they're built much more precise which in turn last much longer. We just have the stigma that 100k is death for an engine.

There is truth to this,it's the "loose" motor theory and to a degree it holds true. As long as your temps are in check and fuel is stable no worries.
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