tarmac Rally - Cam Selection?

by **PaulMK1** » Wed Dec 07, 2011 9:57 am

Anyone had any experience with the Kent GTS4 cam?

Power Band 3750 - 8250
Cam Lift(mm) 8.25mm Inlet/Exhaust
Valve Lift(mm) 13.69mm Inlet 13.36mm Exhaust
Duration 312 Deg Inlet/Exhaust
Timing 53/79 Inlet 89/43 Exhaust
Full Lift 106 Deg Inlet
VC (mm) 0.25mm Inlet/Exhaust
LTDC 4.70mm Inlet

Engine will have a ported flowed GRP1 big valve head, forged pistons, steel rods and 12:1 compression (needs to run on 98RON)

Any/all constructive feedback will be appreciated :-)

by **Cam** » Wed Dec 07, 2011 8:39 pm

Paul T is a Kent dealer. Why not have a chat to him?

by **MK1_Oz** » Wed Dec 07, 2011 8:59 pm

That is the cam that I have although I am yet to use the engine. 98RON for tarmac rally in the classic section?? I believe you can use unleaded racing fuel but maybe you are choosing not to....

by **Danny M** » Wed Dec 07, 2011 11:56 pm

Paul you really want something with a little less duration say 305-306 with similar figures at .050" and closer lobe centres

by **PaulMK1** » Thu Dec 08, 2011 9:03 am

Danny, what do you reccommend?

by **maxrs** » Thu Dec 08, 2011 2:23 pm

Cam lobes should be hitting the spray bar.
Ivan Tye cam. R code for a Pinto. Or
I recommend the cross drilled cams Danny can supply.

tarmac Rally - Cam Selection?

tarmac Rally - Cam Selection?

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