1 reply to this topic

[charlien700]

hi just a couple of question our race car is a 998cc a+ hif38 carb maniflow single box exhaust system and lcb k&n filter and just added a lightened flywheel my questions are what carb needle should i have as im using the standard metro 998cc one and also would a set of roller rockers make a difference if so which ones 1.3 or 1.5 thanks charlies dad

[998dave]

With that exhaust/air filter combination I'm assuming theres an alloy inlet manifold - making it almost a stage 1 kit, this would mean AAU needle was the way forward, however...

You have roller tip rockers, which changes everything, you'll have different airflow, though I couldn't guess at what effects this would have, if you use WinSU, (google it), you can get quite a good first guess, but as always each car is different and you'll get the most out of the race car by taking it to a rolling road tuner, about £80 an hour I think, but will make sure all your expensive mods are working properly, they can also do a health check of your ignition, and advise next steps.

Dave