internals and twins whats the deal bent rods or long lasting

Nissan 350z / Nissan 370z general community discussion forum
350drifter
Posts: 4
Joined: Thu Nov 25, 2004 2:00 am
Car: 2004 350z

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I have really been saving for twins but dont have the cash for all internals is it only the rods or is it more than that and can i get the twins with out internals

sick of loseing to v8,s must buy twins ha,ha,ha


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PalmerWMD
Posts: 14329
Joined: Mon Apr 29, 2002 3:14 pm
Car: 2004 350Z

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This is has been a subject of much debate and yes the main culprit has been the rods, but as long as you are in there, which is very expesnisive especially as you <must> have an extremely competent shop to meet those tolerances, you might as well do pistons and rings anyway.

Fact: All or Nearly all forced induction 350Z's w/ catastrophic failures have been Twin Turbo'edFact: Usually those failures occured within a month or less of installationFact: often those failures occured on engines running only "stock" boost or only slightly more.But also..

Fact: Hundeds of twin Turbo Kits have been sold and installed, if every one of them blew, we should have heard of more failures than we have.Fact: Twin Turbo Kits generally offer better performance than the SuperCharger Solutions (which arent trouble free either).

I have been facing this same dilemma , i can afford a twin Turbo kit comfortably, but an internals build-up would break the bank.

I dont want to wait so I decided to run a supercharger as discussed in this thread:http://nicoclub.com/zerothread?id=99454

However keep in mind that great performance w/o forced induction is possible as discussed here:http://nicoclub.com/zerothread?id=92664

Also one thing I noticed when reading about failures the possibility of an overboost condtions having occured, can NOT be excluded, also nearly all those failures, have been on the low quality California/Arizona gas formulation.

Then there is this issue, which is likelly an additional culprit independent of gas or tune:

http://nicoclub.com/zerothread?id=99972

In summary while it seems you could probably get away for months on a stock internals, with high quality gas, a good tune and a aftermarket CAS wire.. its still very risky...and if the car is a daily driver I wouldnt do it..

I think a SuperCharger is a safer solution. This is why:

-Overboost condition is impossible, due to being belt driven-Few SuperCharger failures have occured and the ones that have, usually lacked a timing solution such as a J&S Safeguard.

These guys currently run a sale on 350Z ATI ProChargers, much less thanthe price listed on their website:

http://www.injectedperformance...id=33

This vendor can get a good price on the HKS Rotrax kit a highly regarded kit (albeit not cheap from any vendor)

http://shadowdragonracing.com/wst_page2.html

Even on SuperCharger an internals build-up is not a bad idea, but it has been shown, that if your fuel and timing tune is good and you keep with the stock pulleys, problems are very rare.

Fred..

s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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you dont think freds been thinking this over do you?


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