Rob R
Well-known member
It's been a LONG hard road but after much buck farting and testing XL's little 452 is going on the pump.
I've had his parts (cam..iron heads..carb..ect) on different engines to make sure everything works with pump gas but in the end (even after grinding a second roller cam) my well laid plans were not so well laid.
My pump gas combo was not so pump gas friendly.:shifty:
As long as the engine temp was around 150 everything was hunky dorree but the min it got up to real operating temps like 190 I got detonation.
The closed chamber iron heads just hold too much heat for pump gas... but luckily a customer who has coveted these heads since he saw them on the flow bench and watched them on the last dyno session offered to trade our hero's iron cyl heads and intake for a brand new set of Indy EZ cyl heads.
So tonight all the parts have come together to make a little hp.
The last time around XL's engine made 575 hp and a hair under 600 ft lbs of tq on pump gas so we'll see what it'll do with these ported EZ's.
and once I have the engine broken in and set on kill were going to throw a little n2o at it (150 shot) and figure out what the MSD 7AL3 will need (chip wise) so our intrepid Hero can just hit a switch and spray his new bullet to his hearts content...
Plus all this will be recorded on state of the art television quality gear (no grainy videos here)
So keep your eyes open for the vid. :giggedy:
I've had his parts (cam..iron heads..carb..ect) on different engines to make sure everything works with pump gas but in the end (even after grinding a second roller cam) my well laid plans were not so well laid.
My pump gas combo was not so pump gas friendly.:shifty:
As long as the engine temp was around 150 everything was hunky dorree but the min it got up to real operating temps like 190 I got detonation.The closed chamber iron heads just hold too much heat for pump gas... but luckily a customer who has coveted these heads since he saw them on the flow bench and watched them on the last dyno session offered to trade our hero's iron cyl heads and intake for a brand new set of Indy EZ cyl heads.
So tonight all the parts have come together to make a little hp.
The last time around XL's engine made 575 hp and a hair under 600 ft lbs of tq on pump gas so we'll see what it'll do with these ported EZ's.
and once I have the engine broken in and set on kill were going to throw a little n2o at it (150 shot) and figure out what the MSD 7AL3 will need (chip wise) so our intrepid Hero can just hit a switch and spray his new bullet to his hearts content...
Plus all this will be recorded on state of the art television quality gear (no grainy videos here)
So keep your eyes open for the vid. :giggedy:
oke:
