2004LEBanshee Posted May 3, 2007 Report Posted May 3, 2007 A few weeks ago i noted that my compression was 184 on both cylinders with timing +5 and I'm running 110 gas. I was told that I could probably get a few more ponys if I went to 7 or 8. Well I put it at seven and fired it up and when in neutral it reved alot faster then at 5 but once I rode it under load it wouldnt pull near as long through the power band like it did at +5. WHy is that? are my mods just not responding well to the timing change? or can the possibility of jetting be an issue. BTW I just did a run with plugs for a plug chop but wollnt get to cut them open till tomorrow. From looking down I believer I have a pretty dark ring but cant quite tell also the dripping oil off the silencers may be a hint too. Quote
Bansh-eman Posted May 3, 2007 Report Posted May 3, 2007 (edited) is it not reving as long in each gear like your shifting sooner or is it not reving as long in the highest gear you normaly run it in.. like your running out of power to pull that gear? Edited May 3, 2007 by Bansh-eman Quote
blowit Posted May 3, 2007 Report Posted May 3, 2007 is it not reving as long in each gear like your shifting sooner or is it not reving as long in the highest gear you normaly run it in.. like your running out of power to pull that gear? It is entirely possible that something is out of adjustment slightly and you are farther advanced than you think. An over advanced engine will generally detonated but will also decline on having "long legs" on the big end as we call it. Your engine just fights against itself. You may just need to bust out a timing light to get this figured out but the plate ain't always dead on. Go with what runs good. Over advanced engines will wear out faster due to increased head pressured and will damage rod bearings. Not saying you are over the sweet spot but sure sounds like it. Are you sure you don't hear a new little sound at WFO in 5th? Detonation? Brandon Quote
FASTOYS Posted May 3, 2007 Report Posted May 3, 2007 For your setup 4-5 will prolly work the best ! You dont really have enough port duration to take advantage of more timing. Play with it at 4 or 5, jet it , and go have fun. Quote
2004LEBanshee Posted May 3, 2007 Author Report Posted May 3, 2007 Thanks I just tried 7 for a few mins then put it back to 5 it runs much better there. I could only get to about 3rd due to the road i was on but when it was at 5 and I punched it in first I could probably flip over if i dont let off. at +7 it would come up a little but quickly stop pulling any harder. so it would only come up have as far. It kinda felt like it was reved out. if that makes any sense. I'm leaving it at +5 Quote
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