WaLKeRR Posted June 29, 2013 Share Posted June 29, 2013 Basically as the title suggests are the TT pistons just a straight drop in, will they go onto an NA connecting rod or will i need the full TT piston, connecting rod big end etc etc, also using a TT headgasket on an Na, best to use oem or get a performance one?. Only thing in my head might be thinking stupid here but, changing all them on a high compression na-t thats been mapped, these things would lower compression would it need to be remapped? Quote Link to comment Share on other sites More sharing options...
bignum Posted June 29, 2013 Share Posted June 29, 2013 NA rods are same as tt so no probs there, i`d think mapping/ fueling will be out somewhat with the lower comp but means you can dial in some more timing, what ecu are you using? Quote Link to comment Share on other sites More sharing options...
WaLKeRR Posted June 29, 2013 Author Share Posted June 29, 2013 greddy e manage blue, probably the most basic ecu Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted June 29, 2013 Share Posted June 29, 2013 if your using tt head gasket and tt pistons the compression will be way low. id use tt pistons with na gasket unless your looking forhuge numbers Quote Link to comment Share on other sites More sharing options...
WaLKeRR Posted June 29, 2013 Author Share Posted June 29, 2013 Right what about just using a TT headgasket? alone with na pistons, not looking for huge power, previously the car was at 335bhp at 7psi, the boost was upped to 10psi and pot one was filled with oil so we are gunna strip the car to look if the rings are worn and letting oil past, Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted June 29, 2013 Share Posted June 29, 2013 the best/propper way to do is to usethe tt pistons , this keeps the engines squish and quench zones correct. the tt gastket is a bit of a crude way of doing it. 335 at 7psi is low . guessing you wer low on cylinder compression on tha dameged one to account for that. Quote Link to comment Share on other sites More sharing options...
WaLKeRR Posted June 29, 2013 Author Share Posted June 29, 2013 so you rekon from day one that cylinders been low compression iirc... all read 140s Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted June 30, 2013 Share Posted June 30, 2013 140s are low, mine were all 160-170 Quote Link to comment Share on other sites More sharing options...
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