J40k-mo Posted May 31, 2015 Share Posted May 31, 2015 I'm wanting to do some head work to get better power out of my gt28 set up ony glanza,What is the best things to do?Cams? Pullys? Port&polish? Valves ? EtcccThanks Quote Link to post Share on other sites
AdamB Posted May 31, 2015 Share Posted May 31, 2015 (edited) What do you mean by power? More peak power? Better mid range? I'd leave it as is, 98% of people have no idea what their doing, and the 2% that do spend a lot of money on dyno time and go through various different heads to find one that works.My opinion of course. If you're adamant, get some 240 degree's, 8.8-9.2mm lift cams. Edited May 31, 2015 by AdamB Quote Link to post Share on other sites
J40k-mo Posted May 31, 2015 Author Share Posted May 31, 2015 Ok mate sweet, just My mapped don't want to up boost up on my set up til some head work has been done, and to be honest I just want it to run as sweet as possible and be safe, I know post and polish can be too much sometimes, what about valve springs etc? Quote Link to post Share on other sites
AdamB Posted May 31, 2015 Share Posted May 31, 2015 Whats the engine spec? What boost you running now? What ecu is it mapped on? Whos mapping it? What exhaust size you using? Port & Polishing is a very widely and miss-used term that like I said, 98% of people even get this wrong, let alone getting something like valve seat angles correct. Valve springs don't really offer any performance advantage, other than allowing you to rev the motor higher, but unless power is still being made there's no need to raise the limiter as it just puts more strain on the bottom end, as well as the lubrication system etc. Quote Link to post Share on other sites
robwob88 Posted June 10, 2015 Share Posted June 10, 2015 A few people I know run their motors with the cams from a n/a engine. It gives them more low-mid power and really brings them alive. That might be worth a shot for you. Quote Link to post Share on other sites
ashep91 Posted June 10, 2015 Share Posted June 10, 2015 Interesting never heard of this before anyone know what spec the na cams are? Quote Link to post Share on other sites
Phil Posted June 10, 2015 Share Posted June 10, 2015 (edited) plus not many manifolds availible that have runners big enough to make the most of your newly flowed head / gt28. like has been mentioned if your talking about really getting into a sorted 4e, then no point in just shifting the bottleneck. Phil Edited June 10, 2015 by Phil Quote Link to post Share on other sites
AdamB Posted June 10, 2015 Share Posted June 10, 2015 Interesting never heard of this before anyone know what spec the na cams are?It will be the 5E-FHE cams, quite rare to find and cost a premium price. They have slightly more duration and lift compared with 4EFTE cams. Not worth the cost that some people ask imo, when you can get custom billet cams for not much more. Quote Link to post Share on other sites
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