new engine build

[hilly413]

just built a new engine for my oval track car, which has to use standard parts

02 vtr bottom end 1600 xsi head and j cam rallye inlet xsi ecu,

standard xsi down pipe

forced induction etc

i used the rocker rollers off a mk2 vtr but have rad on here not to use them, why is that ?

what sort of power will that be ok for?

thanks

[AXracing]

Most cam manufactures only produce very mild cams for the roller rockers as they are not as robust as the solid ones. I have had solid lifters over 9000rpm with no issues.

As for power on standard engines its not really down to what parts you use but how well everything is done. I have seen a "standard" VTR genuinely produce well over 120bhp. But you could easily end up with less power then standard just buy mixing bits and bobs.

[hilly413]

Most cam manufactures only produce very mild cams for the roller rockers as they are not as robust as the solid ones. I have had solid lifters over 9000rpm with no issues.

As for power on standard engines its not really down to what parts you use but how well everything is done. I have seen a "standard" VTR genuinely produce well over 120bhp. But you could easily end up with less power then standard just buy mixing bits and bobs.


thanks, i can all but try, its easily put back if it dont work just a few quid out of pocket :(

[manic]

I used a 2002 bottom end with the .75 crowned pistons. then an early head with z02 printed on it. skimmed it to 110.5 thick not sure how much i took off. then cleaned every thing spotless. running on an omex ecu. got it mapped at a well known rolling road and got 124.9 using standard exhaust manifold and all standard inlet system too

manic