how come they fail :confused:

You people still dealing with Sam ? :bowrofl:

:shakes head:

Interesting build. I used to have a high RPM ITB Civic hatchback, so to see a lot of negativity here about N/A builds is puzzling. My little 2.0 4cyl saw gains switching to a 3" collector and exhaust, so when folks here yell that 2.5" is enough for 3.7l, i just scratch my head.

Thoughts on where your restrictions are now? 3" collectors and 3" all the way back? More compression?

2.5 is enough, because its DUAL 2.5 A 3" was tried

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same reason the stock ones fail, crank vibration, all they did was use a stronger metal with more resistance, they didnt eliminate the problem.

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Yeah no excuse to have had your motor for what a year? Not Acceptable. But the fact is you accept it and Sam gets away with it. GTM has a lot of potential as you can see by the work on OP's car but my gosh they can't run a business. A year long build isn't even needed to build a 1000+ GT-R. That was the only negative drag back from this thread is that OP has GTM products and work done on the car because I won't touch GTM. But I'm happy it worked for OP. Happy OP went N/A. Your the first to do this and had the balls to do so. Going boost isn't everything. Every car is boosted these days. Maybe I'll just do cams and heads and call it a day. That's if I get tired of saving for a GT-R.

Nice! Subd for future updates

Saw this car sitting at specialty z last week while I was getting my gears done, that mani is purty.

Were you the guy with the JDM 3.90 rearend?

GTM still know how to produce huh?....Great results.

wow .. so did you experince that urself or was that in someone's car u come across with ? talking about Nismo Oil pump ..

sorry i'm just trying to study these :)

It's from talking with guys who work on the grand am motors. call up jwt and ask them how long a nismo oil pump will last on a grand am car. If you want this kind of info all you have to do is call and ask it's not like its a big secret.

^ no need to call .. i just wanted to find out how did u know about it.
thank you sir, u just saved ma life lol .. i was considering getting one but not after this.

Yep, dry sump or at least an external oil pump is the way to go.

VQ oil pumps, and all known available "upgrades" are notoriously explosive when factory redline is regularly exceeded by more than a couple hundred RPM

can u elaborate on this ?

You can purchase an external oil pump which is actually the pressure stage of a multi-stage dry-sump pump.

Back in the early 90's, before I went dry-sump on my historic race car I used a gilmer drive pulley to drive an external pressure pump that pulled oil out of the sump, and then sent it thru the cooler and filter and back into the engine.

I'll search the web for a reference and update this page a bit later.

See an example here: http://www.vpw.com.au/Category/Index/6169

and a picture of the general arrangement on a 60's Mopar 6-cyl engine here:
http://i165.photobucket.com/albums/u...er23809053.jpg

Picture taken from a thread on this forum ... link ...

http://www.queenslandchryslers.com/f...php?f=9&t=1301

Nice build. I believe it has more in it for sure.

Awesome build you got there.

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What occurred with the group buy and GTM was wrong but you can't deny their talent and products.

It was the oil pump that damaged my moter.
I was turning 8100 when the oil can light came on my dash board>

Z

Yeah for someone like Z eliminator the external pump would be great. They already have your motor and I know they have the A/c delete done it would probably just be a different bracket to mount up an external pump, then you would just need the remote oil pieces from a supercharger kit and have a new pickup welded into the pan and you too could join the high rev club. you already would have aftermarket rods and valves springs too right? so you could probably rev even harder than me.

1slow370, was it the cams or the custom IM that caused the major gains?

Im sure its a combination of both, and as he continues to rev it higher that manifold is going to become more and more critical.

also I doubled checked and to install a dry sump or external pump it is necessary to remove the internal pump which requires the removal of the timing chains and covers.

Were you running a stock oil pump when your motor let out?

Forgive me for asking, I'm not up on building engines, and all that, I really know nothing about it... But I was curious about the world record part..... What is it?
My next question is this... If the near 100 hp gain is the record, wouldn't it have been 10x cheaper to just use NO2 to get those gains, and still be NA?
Don't flame me, I really don't know these things.

Touché....you bring up a valid point 100whp Shot & Tune perhaps?

NO2 is not Natural Aspiration, it is form of forced induction AKA shoving more air into the motor than it otherwise normally can. The world record is that I am making at least 20 more whp than anyone else with a vhr that isn't using FI. I have 100 more hp with the added stress of boost or nitrous. Deal.

Oh, OK.... I didn't realize that NO2 was considered to be forced induction. Thanks for clarifying.

If it was considered NA then I have seen a NA 1200hp 67 bel air that ran ran 7's. If you could use the term all motor interchangeably then it is NA

Edit/elaboration: yeah 800 shot on a BBC with a hollinger toilet bowl on a built motor and he only went through two sets of copper headgaskets a year

But can you imagine if you decided to add turbos at this point? :happydance:

ThaThat would require an entirely different process to build the motor. The high lift cams would drop boost pressure and that expensive manifold wouldn't be worth the benefit. NA results, this is impressive. A compression boost would make this NA motor nasty

Do it, do it NOW!

Nah if i turbo it would only be to 450whp, and since 400whp seems achievable at my next rebuild so meh

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Oh my lord that intake mani

Just for the sake of argument let us say Nitrous is a power adder. Liking the build man I should have my z back up and running here in a few weeks. Might end up doing some similar stuff as yourself but adding the nitrous on the side.

Impressive build, just took way too long to get it.

It is most definitely a power adder, and not NA, this isn't up for argument. You can't argue that 2+2=something other than 4.

Here is a little video I also added some pics to the second post.