4 replies to this topic

[phil242]

Hi,

Too Much oil consumption, it's time to open, look inside and improve .

Today I have a 1994 near-stock Cooper SPI 12A2EF77, only one mod : a stage 1 (LCB, RC40 & KN in airbox). The final drive is 3.21 and 12 inch wheels, tires 165x60x12.

I have read numerous valuables posts from Sporcket, Git, DaveRob, Klas and other dudes, but it remind me some questions .

The idea is to give more torque to the car, HP in high rev. isn't the goal.
I target a car very responsive in low rev and I never go to 6000 RPM.

As it is injection, the choice for the camshaft is very limited, as I plan to keep the ECU (at least for the moment).

The Kent MD274 seems to be the right one. But I see Sporcket is preferring the MD274SP, not given for injection according to Kent website, but proven working fine.

1/ Witch Kent cam will give a higher torque curve from 1000 to 5500 RPM? "scatter pattern" doesn't speak to me...

2/ According to other experiences, for max torque, people do like the Swiftune SW5-07 without 1.5 high lift rocker. Do you have any comments on this one VS Kent's cam ?

3/ About the head & valves : something like 35/29 or 36/29 the good choice ? Should preserve the torque.

Thanks you for your opinions.

Phil

[phil242]

Hi,

Forget to tell the final drive will be changed to 3.44
It's important to know this, regarding the whole choices for components.

Phil

[phil242]

Hi,

No one have suggestions ?

Phil

[RayBoogs]

i have only heard good things about the swiftune SW5-07, but im not too sure which if its "better" than the kent, but this cam has been recommended to me by a few people i have spoken to, you could think about 1.3 ratio rockers if you didnt want 1.5's as 1.5's would comprimise drivability down low. about the cylinder head a good spec stage 3 head will be fine like the sizes you said.

Jack

[phil242]

i have only heard good things about the swiftune SW5-07, but im not too sure which if its "better" than the kent, but this cam has been recommended to me by a few people i have spoken to, you could think about 1.3 ratio rockers if you didnt want 1.5's as 1.5's would comprimise drivability down low. about the cylinder head a good spec stage 3 head will be fine like the sizes you said.

Jack

Thanx Jack for your advices.

I didn't find yet any charts between all injection dedicated camshaft ...

For the 1.3 / 1.5 ratio rocket, the choice depend on the camshaft. I've seen some curves for the RE13OT with a standard or 1.5, and it's clear it NEEDS a 1.5 ratio rocker.

I think I'll take the Kent274, for a simple reason : a friends rebuilt his SPI with it, and it's a really good CAM for torque in low revs.

Regards,

Phil