Valcon ?....

 

Those GTM specs are pretty extreme. Does anyone have experience with them?
Or know anyone that has them?

 

if you were to do an n/a build i would stick with the 272's get some nice pistons some nice rods, gears, reflash, and then all the basic bolt on's I wouldnt be surprised if someone broke 350whp n/a on an hr

 

Valcon is not sold in the US, so really isn't a viable option IMHO - it also requires ( think) that you use HKS's own cams - making the total package price very expensive, and really an unknown quantity (I don't even know if the software platform is in English)

 

Would osiris control cam timing? and what is your take on GTM cams? would there be much power differance in the stage 2 vs stage 3 or would it only bring the powerband forther into the higher RPM range? Im planning on raising the revlimiter to 8200-8500

 

First, this is about an HR, not a DE

I have no take on GTM cams - we don't offer their products

You would have to ask UpRev about the features of their product - again, not something we offer

 

Can't argue with that now huh chris lol. I was always thinking about doing a setup like that. But why not add a 4.08 fd to the mix..

 

Pretty sure he meant that when he said gears.

 

Put HFC on my car once I already had a cat-back exhaust and I felt the difference!.. I think what happened with your setup is that you just moved the bottle neck a little further down the exhaust and that might be causing your bogging? Get a Y-pipe!

 

you sir...... win teh prize

 

I'm interesting to know what would you offer for HR?
If I wanna build good N/A. I'm not talking about Big-bore kit or anything llike we have to take the motor out of the car tho.

What would you say to pull out the best HR for middle class people.

 

my bad i didnt even see that lol

 

Plus at a stop light people think hmmm, there's something happening in there that sounds fun

 

^^^^I would be satisfied with the 272's....

 

I'm going to be a test pig for the tomei 272/10.8 (in & ex) cam's. I plan on purchasing the 11.0mm lift tomei valve springs as well. As for proper ecu tuning, I have a Greddy E-manage ultimate hardwired into the factory ECU. It can control fuel and advance/retard timing as well (Works awesome with my 125 shot, so I'm positive it'll work fine with these cams). However it does not control VTC.

Z1 stated that the highest lift the HR pistons could take was 11.0mm; So I'm pretty positive the rest of the internal's should be fine. The lift difference is only going from 10.5mm(oem) to 10.8mm(tomei). I have all the breathing mods to compensate for the extra breathing that my HR will be doing (intake, full exhaust; no cats)

However, Im currently saving up and awaiting a couple of paychecks. I'll definately keep everyone updated whoever's interested. I'm about halfway there.

 

if you have no control over VTC, and have no headwork planned, you're better off going with the 264's

 

The only headwork I plan on getting done would be the higher lift valve springs compensating for the higher lift.

Could you go into detail as to what other kind of headwork should be done and why? The only lift difference is .3mm

 

it would end up being a dissertation which would take far too long to write

you're best bet is researching online and speaking to a machinist about how cams work - it's far more than "just"a lift difference

the worst thing you can do is pick cams because they sound cool on paper - get the right ones for the job, and they reward you. Get the wrong ones, and they are paperweights

 

but you have to admit that isn't easy to find out what works and what doesn't.
not so many people have done that kind of job and actually even tested the reliability of the system (that is quite critical if you track the car).

because one thing is 3 or 4 dyno pull with the engine temperature stable... one thing is driving the **** out of the car on a road course starting with the engine mildly warm and ending up really hot, with all the associated changes in a/f, air density, timing adjustment to avoid knock and so on...

I agree that on a stock engine is pointless going with extreme cams or pure "competition cams" unless they are ground just to run on a stock block, with stock pistons and stock heads...

bottom line or you get the right information before starting the work.. or you'll spend way more money than buying immediately a newer and more powerful car.

you cannot beat the factory or the factory official racing team (if there is a class involving that car and that engine)

 

Anyone know if the 11.0mm tomei valve springs will work with the oem valves?

Just talked to my engine builder and he said if the springs are too stiff, the valves could break.