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-   -   How many miles is too many miles to turbo? (https://www.clublexus.com/forums/performance-and-maintenance/437957-how-many-miles-is-too-many-miles-to-turbo.html)

DONT SLEEP 06-30-09 06:29 PM

How many miles is too many miles to turbo?
 
I know someone selling a 2JZGE Motor with everything except the exhaust cam. It also has the flywheel and waterpump. He's trying to get rid of it for $300. I was wondering if the 114k miles was too much for me wanting to get a single turbo XS Kit for it and drop it in my SC400 after I get my hands on a W58.. Any thoughts??

SC300_704 07-01-09 01:59 PM

i currently have over 309k miles on my sc300 and still gonna turbo it and i don't care what people say...:)

TroySC300 07-01-09 02:03 PM

Save your money and buy a SC300 imo

Mr.NA_T 07-01-09 02:26 PM


Originally Posted by SC300_704 (Post 4645900)
i currently have over 309k miles on my sc300 and still gonna turbo it and i don't care what people say...:)

:thumbup::thumbup:
do what you want to do, its your money:D

DONT SLEEP 07-02-09 06:20 AM


Originally Posted by TroySC300 (Post 4645912)
Save your money and buy a SC300 imo

My SC is in really good condition both inside and out.. I also like the SC400 front bumper lip and rear wing that the SC300s dont come with.

I was just wondering if this motor was a steal price at $300 with 114k miles and if I could use it for boosting.

Blizzy 07-02-09 08:17 AM


Originally Posted by DONT SLEEP (Post 4647436)
My SC is in really good condition both inside and out.. I also like the SC400 front bumper lip and rear wing that the SC300s dont come with.

I was just wondering if this motor was a steal price at $300 with 114k miles and if I could use it for boosting.

It might be less trouble to swap the SC4 front lip and rear spoiler onto an SC3 than swap a motor and transmission into your SC4.

Is 114k too high for boosting? Almost independent of age, if the motor compression tests and leakdown tests okay, then it is ready. If not, then the motor is not.

Are there 250k mile 2JZGE motors out there running eleven flat in the 1/4-mile? Yes. Are there 100k mile 2JZGE motors out there blowing head gaskets or worse from boost? You bet.

Is $300 a steal for a 2JZGE motor? If it is healthy, that is a rather competitive price, especially if you have the added perk of being able to avoid freight charges. Since a number of 2JZGE motors exchange hands for this price, so I would not consider this price to be a steal.

If you have the skill and the resources to complete a motor -lacking an exhaust cam- and transmission swap easily enough to seriously consider this transaction, I would weigh the possibility of boosting your current motor since you clearly have the know how.

While the supercharged SC400 route is a road less traveled, the results are clear and attainable. KC95SC400 has supercharged his SC4 with ~150k on the clock and he was running 13s having spent around two grand. He is now into the 12s.

Also consider that while the motor you have available to you is only $300, once you add in the cost of the exhaust cam, the transmission, the clutch kit, the other swap parts, and a turbo kit on top of that, yikes: you would be spending more money and significantly more time than just boosting your current motor.

To boot, if you are considering that you will be getting top dollar for your current motor and transmission as a way to offset the cost, don't bank on it. While the 1UZ motors are bad ass, the demand is small since it is -and probably always will be- a niche market. The transmissions are so common, that my tranny with 74k miles wouldn't sell on the classifieds for $200 shipped. I ended up offering it to KC95SC400 if he paid me shipping costs + $25.

Like I said earlier, it would be much easier to find a 5MT SC300 (perhaps even with the factory spoiler option) and swap over your lip from the SC4, then to transform your SC4 back into an SC3 running through a maze of outlets to find every part you would need to make it happen. The nickel and dimeing of that process would drive me crazy.

QwkSC 07-02-09 08:19 AM


Originally Posted by SC300_704 (Post 4645900)
i currently have over 309k miles on my sc300 and still gonna turbo it and i don't care what people say...:)

cant wait for the engine build pics:thumbup:

then, 2 weeks later, the rebuild pics!:p

qksl2 07-02-09 08:37 AM

High mileage isn't an issue if the engine is in good shape. Do a compression and leakdown test. If you've got oil leaks, they will be compounded in a big way by the added crankcase pressure of a turbo system, especially on a worn motor.

Swapping the 2j into the SC4 is going to be a significant amount of work...

Ian

ihiryu 07-02-09 10:16 AM

or what about supercharging the 1uz? I think if you are going through the whole swap process just break the bank and go ahead and go GTE.

ucfa4 07-02-09 11:16 AM

I agree it would be easier to swap the lip than a motor. You could turbo any motor as lomg as the compression is good.

ICONYQ 07-02-09 12:27 PM

Read Blizzy in depth explanation and then reread. Does not matter on age...it is the health of the motor. I would also say think about doing the 5 spd swap on the 400 and then go FI.

SC300_704 07-02-09 12:59 PM


Originally Posted by QwkSC (Post 4647663)
cant wait for the engine build pics:thumbup:

then, 2 weeks later, the rebuild pics!:p

it's my dd and i race the crap out of it all the time, my compressions are also all good so i don't see why i need to rebuild my engine unless i have a crappy tune....

ashtray 07-02-09 03:51 PM

can you supercharge a 2jz-ge??

SC300_704 07-02-09 08:42 PM


Originally Posted by ashtray (Post 4648869)
can you supercharge a 2jz-ge??

this is for the is300 but it might fit the sc300 w/ vvti but not 100% sure...

http://ep.yimg.com/ip/I/ntnsracing_2061_229899034

Blizzy 07-03-09 07:23 AM


Originally Posted by SC300_704 (Post 4649514)
this is for the is300 but it might fit the sc300 w/ vvti but not 100% sure...

http://ep.yimg.com/ip/I/ntnsracing_2061_229899034

The price of that supercharger alone would be more than an nice turbo kit for the SC3, unless you found one used for an excellent price.

The effects of the supercharger would be nice, but a turbocharger is more efficient. Also, the turbo offers a a better boost curve. Centrifugal superchargers have a linear boost curve, making peak boost at the redline (4psi @ 3k rpm, 8psi @ 6k rpm, etc).

Making peak boost in the vicinity of peak torque (like most turbocharger systems do) allows for a flatter torque curve. This will be especially true when added to a low displacement motor on a fairly heavy vehicle.

In general, if you have the space for a turbocharger and the aftermarket supports the modification, don't second guess yourself and use a less efficient boosting mechanism (supercharging). The V8 guys on this forum who toss supercharging around often do so for those same reasons in reverse: lack of space and a lack of support in the aftermarket.


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