We are trying to finish an evo vi up to 1000hp which will be driven in the street also and race.The problem is: We have solid lifters(not shims) bought from UK and we are wondering what kind of cams we must buy,in order of course to have a complete correct engine workup in the race and in street also.Some told us that we must choose cams to fit solid lifters because there are cams which fit only with solid lifters and other cams fit only with hydraulics.This is true??

If this is true pls advice what do you think the most suitable cams(272 or 280 and brand and lift) are for this car.

 

Solid lifters will work best with a solid cam profile, but have proven to work with hydraulic profiles as well.

 

What brands are available to you in Cyprus? Cosworth, Jun, HKS, Tomei? What size turbo do you plan to use and how high do you plan to rev the motor?

Tomei:
272* with 11.5mm lift in/ex
280* with 11.5mm lift in/ex

Jun:
272* with 10.8mm lift in/ex

HKS:
272* with 10.2mm lift in/ex
280* with 10.2mm lift in/ex

I do not have the rest of the tech data for those cams but it is a known fact that the HKS cams are the mildest of the three. Not only does it run a lower lift but probably the centerline is also different so the cams will be more streetable. The higher lift cams will build better power BUT you will have to make sure you get the proper valve springs and retainers to match the cam's lift.

I didn't mention Cosworth because I do not know much about their products but I am sure someone will post info for their cams if Cosworth has a compatible solid cam.

 

wrong forum....moved to evo/engine/turbo/drivetrain

 

In Cyprus we have JUN HKS and TOMEI cams.We are planning to use an HKS TO4Z turbo with A/R 86 maybe with A/R 1 afterwards.The engine is planned to rev until 10.000 rpm.

Our valves are FERREA 0,5mm oversized and springs are from MANLEY double not single and retainers are MANLEY titanium.

So what do you think as the best cam on this motor??

 

How can i move all this info to that forum?

 

The solid lifter conversion for the 4G63 does not require you to switch to a solid lifter cam type. The solid lifters are fully compatible with all regular 4G63 cams. They infact allow you to run more aggressive cam profiles safely. Call BLE at 1-877-300-2224. They manufacture solid lifters for the Evo 8, and will be able to answer any questions you might have.

 

Try contacting Kevin at Kelford cams in New Zealand. All the quick 8 sec Evo's run their cams and I have them on mine as well... We have an Evo 3 running a GT42R with Jun 272's and BLE solid lifters...

 

What do you say about Tomei 280 cams and 11,5 lift will work in the street(exept in race) with the HKS TO4Z??

 

Do you agree that in high RPM the solid lifters might cause a problem in the engine or move from their tune place?I am asking because my tuner is affraid of using the solid lifters in hte engine and that they always want tuning and checking up if they are in wright place.

 

The T04Z is actually HKS's version of the 37R except that its using a T4 type turbine housing with a slightly larger A/R on the compressor side too. Also known as a ball bearing T04R. I am using a Garrett made T04Z from Japan but have fitted a T3 turbine housing on it.
The turbo itself is pretty laggy ( not sure if yours is a 2.0 or 2.3) but the Tomei 280 cams are assymetrical and turns out to be a laggier cam than the HKS 280's or the JUN 272's. Do not get me wrong as the Tomei's do make the numbers but I feel that the ramp rate makes the spool up slower than the other 2.

Do not be deceived by the JUN 272's, they may be a 272 but they are rated very differently in duration to the rest at a certain valve lift. If you had a look at it, it has very quick ramp up rates and progressive ramp down rates but yet have big round lobes for bigger effective duration.

If you want spool up thus you wouldn't run the Tomei 280's. We had a back to back comparison on 2 cars running the 2.3 stroker with the GT35R one with Tomei 280's and one with HKS 280's, while the Tomei made 15 more WHP at the top, the HKS spooled 300 rpms to full boost earlier.


Len from BLE has claimed that their solid lifters do not require constant adjustment but we have yet to find that out...

 

Solid lifters = high performance, high maintenance and exact valve train accuracy

Hydraulic lifters = crappy performance, low maintenance and sloppy valvetrain performance

With hydraulic lifters you have nothing to adjust, and you basically just let them run until they die (or your head breaks) or become worn/damaged. If they become worn & out of spec, you will lose power and may not even become aware of it. With solid lifters, you have more control over valve clearance, and you also must periodically adjust them. They are higher maintenance but you will never lose power because you can always re-adjust the valve clearance back to OEM spec (more accuracy). Solid lifters also have the advantage at high RPMs (less prone to failure and valve float).

 

I hope you are not stuck on that 1000hp number because the T04Z is probably going to top out at about 750whp and an AR1.00 will more than likely produce a very peaky powerband. Are you locked on using the T04Z? Have you considered any of the turbos from the GT40R/42R series or maybe even an RX6B.

The question is how streetable do you want the car to be? The Tomei 272* or 280* cams will definitely build more power but the Jun 272* cams will be more streetable than both. If streetability is your least worry then go with the Tomei 280* cams.

What is the intended usage for your setup? This needs to be considered more than anything. 1000hp and 10k rpm can be obtained but dynoqueens rarely perform well when put into action. What transmissions will you be using?

 

Thank you for the info.Just can you tell if there is a chance in high rpm or while the car is driven on the road the solid lifter to cause a brake down or loose their tuning etc???

 

I have the TO4Z i will try it see up to what hp can it go and i might choose the T51 KAI and sale the TO4Z,i like HKS turbos very much.The car at first will be 70percent streetable.The transmition is the standart gsr one(freshed up thow with cusco differ) plan what company's transmition will fit our car.

So you say that Jun 272 10,8 lift in/out will fit with the solid lifters and gain the power i want and be streetable,have torque,and reduce laq...instead of the Tomei 280 11,5lift??