-FINALLY DYNOED, PRETTY HAPPY WITH IT- shitty track times inside
#22
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
Originally Posted by hondacivc93
well any other suggestions for keeping the head from lifting then? i know ive heard of d series with much more power than this.
You are vibrating the bores with detonation, causing the headgasket seal to breach. It is the sleeves that are moving as they are a lot weaker than the OEM headbolts. Back off on ignition timing and/or retard the cam a degree or two. Monitoring ECT during this process is handy, I've had cars make "the same" or sometimes better power when pulling timing, but the engine continues to run cooler, even losing heat mid-pull.
Frankly, 320 whp on a Mustang you are probably at the knock limit of pumpgas and that is why you are purging coolant. Water injection, better cam, some 110, congrats on putting together a manly setup now it's time to man up and take her to the next level. You will also have to replace your headgasket in the next 100-3000 miles as you've broken it's seal, and it will degrade.
Post up the dyno graphs, it's possible to tell by the shape of the graph if cam timing is an issue and if you need to retard it a little.
#24
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
Originally Posted by Joseph Davis
There are no suggestions for preventing D-series head lift, because they don't lift. No D-series in the history of man has ever lifted it's headgasket so stop listening to e-******* who have accomplished e-nothing in the real world. Also ignore ******* who say OEM rod bolts are remotely weak, that aftermarket FPRs are a tenth as good as 20 year old stock B-series ones, or that stock fuel lines are only good to 500 "but I wouldn't take my car there." I've run stock rod bolts to 9500, made 640 with slicks spining on the rollers off of stock fuel lines and OEM FPR, and generally disregarded most of what I read on forums because forums are like any large group of people; 95% of them are idiots.
You are vibrating the bores with detonation, causing the headgasket seal to breach. It is the sleeves that are moving as they are a lot weaker than the OEM headbolts. Back off on ignition timing and/or retard the cam a degree or two. Monitoring ECT during this process is handy, I've had cars make "the same" or sometimes better power when pulling timing, but the engine continues to run cooler, even losing heat mid-pull.
Frankly, 320 whp on a Mustang you are probably at the knock limit of pumpgas and that is why you are purging coolant. Water injection, better cam, some 110, congrats on putting together a manly setup now it's time to man up and take her to the next level. You will also have to replace your headgasket in the next 100-3000 miles as you've broken it's seal, and it will degrade.
Post up the dyno graphs, it's possible to tell by the shape of the graph if cam timing is an issue and if you need to retard it a little.
You are vibrating the bores with detonation, causing the headgasket seal to breach. It is the sleeves that are moving as they are a lot weaker than the OEM headbolts. Back off on ignition timing and/or retard the cam a degree or two. Monitoring ECT during this process is handy, I've had cars make "the same" or sometimes better power when pulling timing, but the engine continues to run cooler, even losing heat mid-pull.
Frankly, 320 whp on a Mustang you are probably at the knock limit of pumpgas and that is why you are purging coolant. Water injection, better cam, some 110, congrats on putting together a manly setup now it's time to man up and take her to the next level. You will also have to replace your headgasket in the next 100-3000 miles as you've broken it's seal, and it will degrade.
Post up the dyno graphs, it's possible to tell by the shape of the graph if cam timing is an issue and if you need to retard it a little.
i would pull a little timing but A. i dont know how or how much timing to pull. i dont ---- with crome i let my tuner do that. and B. my tuner is 4 hours away from me and i cant just drive back and have him adjust it. ill get some more pics of the car and setup tonight and ill snap a pic of the graph as well.
#26
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
Originally Posted by Joseph Davis
I'm pretty sure my reading comprehension is in the toilet.
#27
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
Timing gun. Do it all the old fashion way take timing out at the dist. and the whole powerband. Weak rod bolts is something I dont know where it started the old man and I always laugh about all the stock rod b series all motor builds he did that got rapped into holy ---- land and never failed. It was always the valvesprings that make motors fall apart at high rpm.
#28
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
I have no E85 experience, but the stuff is supposed to be great even if the blend does change seasonally. You should be able to make more than 320 off it, but me having no practical experience with it I can't say.
Get those dyno graphs pls.
Get those dyno graphs pls.
#29
Re: -FINALLY DYNOED, PRETTY HAPPY WITH IT-
Originally Posted by chris
Timing gun. Do it all the old fashion way take timing out at the dist. and the whole powerband. Weak rod bolts is something I dont know where it started the old man and I always laugh about all the stock rod b series all motor builds he did that got rapped into holy ---- land and never failed. It was always the valvesprings that make motors fall apart at high rpm.