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rob77

By rob77,
in Engines & Forced Induction

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GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted
 

Are they both using the same turbo's?

 

Obviously if a turbo is at the edge of its efficiency then a set of cams will do wonders, cams reduce the amount of boost required to flow x amount of air.

 

To make more power you can either use a larger laggier turbo or start looking in to improving air flow in to the pots.

No, there not using the same turbo, I have a GT30, and robs is the TD06. Even he will agree that his is laggier than mine.

The point that we were trying to make is that SK comment

My experience has been that the standard camshafts are the most likely first limiter over 250 rwkw. They simply don't have enough lift or duration to let the air into the engine. Sure you can turn the boost up and try and squeeze some more air in, but you will get higher inlet air temps and lower efficiency.

doesn't always hold true. On stock cams mine has made 330rwkw and still hasn't fallen off at 8000rpm. That's not to suggest that most RB25's don't do what SK suggests though, but cams may not be the only restriction.

I haven't had any port work done yet. just want to see how far I can go with the stock cams.

and its still using standard injectors and cams?

We're using GTR injectors now, although we could have got the stockies to this level, we knew that seeing as we're pushing for 500rwhp that they wouldn't last. Just need to fit an 044 pump as I'm sucking the pump dry:(

rev210 Grand Master

rev210

Posted
Posted

GTS-t Vspec,

You are definately missing out on not having some higher lift/longer duration cams in your engine. You will make more power and the inlet temps will not be as high, it's just physics. There are always two ways to make good power. So far you have chosen the hard way trying to see how much power you can make on standard cams. For the rather small outlay you could pick up so much performance. I'd like to see you crack a 12 second pass, you've been waiting so long for it so I reckon you should treat yourself to some nice camshafts :P

GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted
GTS-t Vspec,

You are definately missing out on not having some higher lift/longer duration cams in your engine. You will make more power and the inlet temps will not be as high, it's just physics. There are always two ways to make good power. So far you have chosen the hard way trying to see how much power you can make on standard cams. For the rather small outlay you could pick up so much performance. I'd like to see you crack a 12 second pass, you've been waiting so long for it so I reckon you should treat yourself to some nice camshafts :(

Dave, Sure I could put a set of cams in, and make alot more power, but I just wanted to show that it's not necessary to make decent power and not run out of puff at 6500rpm. I'll do an 11sec pass with stock cams just for you;)

Sydneykid Grand Master

Sydneykid

Posted
Posted
Dave, Sure I could put a set of cams in, and make alot more power, but I just wanted to show that it's not necessary to make decent power and not run out of puff at 6500rpm. I'll do an 11sec pass with stock cams just for you;)

You go for it, it's not the way I would do it. But hell, give it a go, maybe you will be the first person in the world to do an 11 on standard cams. :( I really don't know whether anyone else has ever done it. I do know a black R34 GTT that did an 11.6 with 50 bhp less than you. But it had 260 Tomei Poncams in it, so it doesn't count.

But on to more serious matters...

the engine had only been rebuilt 2 days earlier

What happened?

summoner Mentor

summoner

Posted
Posted

I have no doubt of its potential.

I cant pull on it with 4 people in my car yet i can easily walk away from other reasonably quick cars(low 13's etc) as if they standing still.. once again with a full load.

What speculation you want on his HP.. if you'd see it you'd believe it.

Sydneykid Grand Master

Sydneykid

Posted
Posted
THing is Sydneykid is we have cars out there,You rewrite other PPLs storys as your own.

Facts Steve, I only deal in facts. And the fact here is the R34 GTT did an 11.6 with 50 bhp less. Whether I wrote the story or someone else did is irrelevant.

Sydneykid Grand Master

Sydneykid

Posted
Posted
i seem to recall use of slicks.. and bits breaking..

Yep summoner 50% correct, my suspension set up got the traction and squat so good that a driveshaft became the weakest link. But the fastest run was on Nitto's, not slicks.

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