Very true, I always thought it was quite annoying when those trucks would always try messing with me. Anyways what are you gonna do....

 

Smoke'm

 

i don't agree with this statement,the 30% rule applies to performance builds.for longevity of a high stress engine all parts should be designed to withstand your planned h.p. plus 30%.any less is risky and anymore is overbuilding.the life span of a 30% motor and a "every part in the book"engine is identical barring outside influence.the only difference is cost to build.

 

That is your opinion, and I respect it. Just as my previous statement is my personal opinion. I have nothing to gain by recommending someone to "overbuild their engine" Obviously if I didn't believe it was the best thing to do I wouldn't have gone the course I went with my engine, which would have saved me thousands.

We will just have to agree to disagree

-George
GT Motorsports

 

thats fine, but just for clarification you believe a 500 hp motor deserves a 1500 hp rod regardless of the fact a 1500 hp rod weighs considerably more than a 750 hp rod?

 

No, I believe that my GTM rods, that are lighter than any after market rod available for the VQ35, and are capable of 350hp per rod, are the way to go

I am all about the lightest AND strongest components possible

-George
GT Motorsports

 

me too, but you did not answer the question.you said you believe overbuilding is nessesary but you have not clarified why?

 

Because it makes him more money.....

 

considering every one of his posts in here sound like an info-mercial you may be right.(even though in post 64 he mentions he has nothing to gain....hmmm)

 

If you have the money and dont care to spend it, then by all means over build it. I am a firm believer of using just what is needed to make the engine strong, but dont see a reason to spend money on parts which are not needed.

EDIT:
Its also probably different for me, because I like to do my own work so if something breaks I just pay for parts. So that makes it a good bit cheaper.

 

the reason you overbuild is for the security reasons. when going FI you are bound to run into problems, breaks, cracks, leaks, or whatever...it WILL happen. when you overbuild you have that sound security in mind that your car is better built to handle the added stress...

so i would say its more of a reassurance thing

 

Yes....that is why its called over building. Things can happen, but doesnt mean it always will. Again depending on the purpose of the car, determines what I would put into the engine. This is my opinion and my opinoin only. Just because you put the biggest and badest parts in the engine doesnt mean it will last longer or be better.

 

i understand suggesting overbuilding when a customer does not give you clear info on goals,but to blanket overbuild without reason is suspect.i would rather brag about a purpose built motor as opposed to a general "best of everything" motor that will never see it's potential or performs similiar to a carefully planned much less expensive build.ultimately you are limited by the chassis and to build for 800 hp when the car is out of control at 600 hp is just a waste of money and time.

 

+1 most failures can usually be traced to outside elements and your mega build is just a succeptable to a bad tune or coolant leak as a stocker.30% rule will give you piece of mind without over stressing your wallet unfairly.

 

I have a question that hasn't been addressed at all yet. I know in the early stages of our builds we were doing 8.5-1 compression ratios. Now I've seen 9.4 cr. What are some of the benefits and downsides to having a higher compression ratio. I'm assuming you can get a little more engine power and throttle response but does it put more stress on the rods then.

 

benefits include more response off boost and greater potential while boosting,downsides are more likely to detonate,more stress on rotating assembly and head gaskets.

 

I don't know how I did not answer your question, You asked a general question about a hypothetical scenario, and I answered with a specific answer that relates to what I actually did with my build.

When build a VQ there aren't that many choices for Rods, Pistons, Crank, etc.

Do I recommend Pauter rods to people? No because I believe they are too heavy and not needed based on what we know today.

I do not want to derail this thread any further off topic, if you would like to discuss how I feel about selecting components to build an engine PM me and I will send you my number so we can chat, I love to talk about cars

As I stated, I have nothing to gain from people "overbuilding" their cars. To be honest I don't really care what you decide to go with for your engine, because its your engine - not mine. All I am doing is voice my honest opinion based on what I know, If you would like to take it that is fine, if not that is fine also.

Oh and to answer your hypothetical question posted above, I would obviously choose the 750hp rod that weighed considerably less(lightest and strongest for me), but according to you this would still be overbuilding, since all I would technically need is a 500hp rod, which would weigh even less than the 750hp rod, hypothetically.

Have a nice night,

-George
GT Motorsports

 

thank you for answering.(i would choose the 750 rod as well)

 

Do you happen to have a graph showing PSI?

 

Not picking on you here George, but I disagree. Posts like that lead people to assume that built engines can take 600+whp levels all day long for years to come. For people that REALLY drive their cars even 500whp levels can cause problems for the best set-ups. There is a false sense of security that many people have with built engines. "Oh my block can handle 1000whp, 500whp is fine" For some its not the case. My point, if you drive your car for what it is built for, your not guarnteed years of enjoyment, you may not even make it to 10,000 miles