I'm done with this $hit..
07-11-2011, 11:37 AM
#62
Why don't we just admit that the VQ35DE/HR is not meant to be boosted
Spun engine bearings is a common issue with Nissan engines.
Last edited by midz350; 07-11-2011 at 11:55 AM.
07-11-2011, 11:51 AM
#63
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I could have just taken all that money and put a healy down payment on a used GT-R, spend 5 grand on a full exhaust, E-85 Conversion, tune and intake and run just as fast as my car
07-11-2011, 12:13 PM
#65
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For the people that have spun bearings...What brand bearings were you using? Were you guys monitoring oil pressure? Just trying to get some info for my buddy's build. We ended up doing own work and decided to go with OEM bearings due to the avail. of different size bearings.
07-11-2011, 12:43 PM
#69
no aftermarket option? do they offer undersize bearings from nissan? cuz if they are using stock clearance on a high hp engine thats a recipe for failure since oem's use tight clearance anyway. theres no way that stock clearance would work on FI. Of course the builder could machine down the crank a little for larger clearances i know napa charged like 40 bucks to refinish a crank and that would loosen the clearances like .0005
07-11-2011, 01:01 PM
#71
are the built motors the only ones having issues? There are literally hundreds of boosted VQs out there and not everyone has problems. What percentage of boosted VQs do you think grenade? Is it 1 out of 4? The shops I have talked to, Z1, S&R, Forged have boosted the stock blocks in these cars and claim their customers have thousands of miles on them. Which I believe because my best friend has a Forged Turbo car and it seems really reliable.
Are we talking just the built ones that are having major issues?
Are we talking just the built ones that are having major issues?
07-11-2011, 01:09 PM
#72
are the built motors the only ones having issues? There are literally hundreds of boosted VQs out there and not everyone has problems. What percentage of boosted VQs do you think grenade? Is it 1 out of 4? The shops I have talked to, Z1, S&R, Forged have boosted the stock blocks in these cars and claim their customers have thousands of miles on them. Which I believe because my best friend has a Forged Turbo car and it seems really reliable.
Are we talking just the built ones that are having major issues?
Are we talking just the built ones that are having major issues?
I'll put money that these so called built engines would have failed with or without boost.
Last edited by djamps; 07-11-2011 at 01:11 PM.
07-11-2011, 01:31 PM
#74
Only built engines have these constant bearing issues. Stock blocks typically handle boost fine until the rods bend from too much tq or the rings are torn apart from detonation.
VQ's aren't meant to be boosted? More like 'engines aren't meant to be built poorly'. I'll put money that these so called built engines would have failed with or without boost.
VQ's aren't meant to be boosted? More like 'engines aren't meant to be built poorly'. I'll put money that these so called built engines would have failed with or without boost.
07-11-2011, 01:35 PM
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. Dont know if its true but a few extra dollars and me not wanting to find out the hard way helped my decision... Also bought the Injected Girdle for added safety measure...
07-11-2011, 02:36 PM
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On the Subby Forums they say they are rebadged, but Cosworths have a anti-friction coating on them.
I pretty sure mine had a coating on them when i inspected them for my build but dont quote me on it... I never inspected an ACL bearing so i don't know if they have a similar coating..
I pretty sure mine had a coating on them when i inspected them for my build but dont quote me on it... I never inspected an ACL bearing so i don't know if they have a similar coating..
Last edited by IslandZavage; 07-11-2011 at 02:57 PM.
07-11-2011, 02:51 PM
#80
Hard to tell from anecdotal reports how many built engines actually fail. I've been happy with my one and only engine build (FP S1 shortblock). 3 years and 25k+ miles and knock on wood, keep trying to max out my setup for more power without any disasters so far.
Engines that fail right away shouldn't cost the owner anything more than time if you can do all the work at one shop.
Engines that fail right away shouldn't cost the owner anything more than time if you can do all the work at one shop.