Normally the best turbo cam is a standard cam! yes.gif

 

funny about that,

 

would the same thing apply to a low boost supercharged setup

 

like 4psi-ish?

Sure does, even more so because of the SC's low RPM power curve.

 

I highly doubt you'll get boost down to 4 psi either! :cool:

well.. I'm looking for a stock 5k camshaft..

 

Can anyone help me out?

 

Cheers, Gerard

 

Is it a hyraulic cam or have you changed to a solid cam setup? as i have a mild CROW CAMS hydro that i pulled out to do my sc setup. It wasnt too nasty and had

a calm idle and a heap of torque down low.

 

What I'm using thanks to the advice of TAZ RX and MADROLLA68 is a std 5K bottom end with 4K flat top piston head, a 4k CLIVE CAMS regrind cam, CHEV/HOLDEN v8 lifters,4k adj rockers and datsun A12 pushrods(thanks kangaroosa!!).Intake wise i have a 7K-E efi manifold, prehistoric Microtech D5 fuel only ecu and sc/12 supercharger.

Not too sure what that works out compression wise but i know just from looking that there would be around 15-20cc difference in the head chamber may help your compression problem.

I hope too have the sc on soon, but at moment its just low comp N/A too iron out any bugs. I`ll update my rides thread when its done and dyno`d.

 

Good luck solving your problems, mine have only to start.

 

stu.

^^^^^very interested to hear your updates!

How can you tell if its a hydraulic cam or a standard?

 

whats the difference?

He means hydraulic lifters. Take your tappet cover off and have a look if you have adjustable rocker gear, if not its still hydro.

Is it a hyraulic cam or have you changed to a solid cam setup? as i have a mild CROW CAMS hydro that i pulled out to do my sc setup. It wasnt too nasty and had

a calm idle and a heap of torque down low.

 

What I'm using thanks to the advice of TAZ RX and MADROLLA68 is a std 5K bottom end with 4K flat top piston head, a 4k CLIVE CAMS regrind cam, CHEV/HOLDEN v8 lifters,4k adj rockers and datsun A12 pushrods(thanks kangaroosa!!).Intake wise i have a 7K-E efi manifold, prehistoric Microtech D5 fuel only ecu and sc/12 supercharger.

Not too sure what that works out compression wise but i know just from looking that there would be around 15-20cc difference in the head chamber may help your compression problem.

I hope too have the sc on soon, but at moment its just low comp N/A too iron out any bugs. I`ll update my rides thread when its done and dyno`d.

 

Good luck solving your problems, mine have only to start.

 

stu.

 

If you use a STD head gasket it will be around 8.2:1 depending on how much the head has been shaved and what the piston height is.

 

MAtt

The Compression test came back all good, he said it got good low compression (don't know ratios)

 

I haven't touched the motor when i got it so i would say they would still be hydraulic!

 

I will need to take the efi off and have a look tonight.

 

Also kickn5k would that mild cam be ok for the turbo?

 

Cheers, Gerard

The Compression test came back all good, he said it got good low compression (don't know ratios)

 

I haven't touched the motor when i got it so i would say they would still be hydraulic!

 

I will need to take the efi off and have a look tonight.

 

Also kickn5k would that mild cam be ok for the turbo?

 

Cheers, Gerard

 

 

I would say the cam MIGHT be ok for boost(i am unsure of its specs though). If it is big power your after then id go a regrind cam for boost."just my two cents worth"

There are a few cam grinders around that can do that for you. I use Clive Cams in VIC there number is (03) 9758 - 5977 or you could try Wade(VIC) or Tige cams(QLD) I don't

have there contact deatails but they both have comprehensive web site. I have used all three and all are great to deal with. i just use Clive as he is prepared to get a little more custom on grinds than the others.

Hope that helps.

 

stu.

 

p.s. Thanks for that info Matt i guessed about 8.6 : 1 without measuring the pistons so i supose i was pretty close.

my turbo used to stall at idle sometimes with 5k factory cam, got a turbo grind done it it and i couldnt believe the differance, it went heaps harder and turbo was spinning proply at idle, 5k cams are designed for low down torque in vans, not something you need in a nice light rolla

 

i still had good low down power aswell, could still cruise up hills at low rpm