Running stock tiwns have noticed a few threads were guys have said they have modifed there wastegate, what do u get out of doing this??? is it worth doing?? can you get a better aftermarket wastegate for stock twins??? i have seen loads of different ones for single tubs.
I think people modify there wastegate when they go non sequential. I dont think you can get an aftermarket one, as its internal. not external as opposed to when you run a single. So i would have thought if you are running stock twins, its not worth doing.
thought that was the case, cheers for clearing that up
Actually i might be wrong, looking through some old threads and it seems that Peterwolds has had his wastegate bored out by pip, and he is running stock twins!!!!???!!!:flamed
the reason you modify the stock actuator wastegate set up is if you have a ported engine with big exhaust and i/c set up the stock wastegate cant flow enough excess gasses through the stock wastegate hole and you end with with boost creep or spikes. This is obviously not good.
By porting the wastegate you are just making the hole that the excess gasses flow through bigger. It doesnt increase performance but means you can have bigger porting and run the stock twins safely
now that explains it, cheers for the explanation
Bugger ive still got a lot to learn:o :2Rolleyes :3Confused
Quote from: antnicukthe reason you modify the stock actuator wastegate set up is if you have a ported engine with big exhaust and i/c set up the stock wastegate cant flow enough excess gasses through the stock wastegate hole and you end with with boost creep or spikes. This is obviously not good.
By porting the wastegate you are just making the hole that the excess gasses flow through bigger. It doesnt increase performance but means you can have bigger porting and run the stock twins safely
only just seen this thread, my engine isnt ported but the exhaust is a biggy so wastegate couldnt get rid of the gases & as you say boost creep crept in - sorted now wastegate ported went from 25 mm to 28 mm to release gases, nice explanation ant :Thumbsup!