The heads that were sold to me then put bronze guides in, and springs wouldn't flow oil to the top of the head correctly, specifically the driver's side head. Leaving much of the valve train oil lacking, including the cam followers which stay collapsed, making that noise. Head swap numero dose in processwhats wrong with it?
The heads that were sold to me then put bronze guides in, and springs wouldn't flow oil to the top of the head correctly, specifically the driver's side head. Leaving much of the valve train oil lacking, including the cam followers which stay collapsed, making that noise. Head swap numero dose in process
Thanks, they were warrantied - so it's not totally crappy. But i don't get reimbursed for all the time the swap and figuring out what the problem wasyour changing the heads again, that rely sucks, good luck this time
no advantages in running a NPI cam on a PI motor, it's tailored for the NPI set-up and has less lift - so nothing really to gain from using it in a PI combo.i think i read that up somewhere that they were npi cams. are there any advantages or setbacks from running npi aftermarket cams on a pi motor? is that a good cam?
sorry to the original poster, not trying to steal your threat just hoping to get something cleared out.
you're half right if that 1st pi you mentioned was supposed to be NPI. Duration is length of time the valve is open considering any point in the lift cycle - measure by degrees, yet that's not the only determinant - as LSA or lobe separation also measures the period (in degrees) of time in between the exhaust/intake cycle, but its actual number is specific to the cam and doesn't tell you the whole story as it is the sum of two figures that are then halved. The lift is in actual inches, the further it needs to lift with a constant duration means the faster the valves are traveling into the cylinder and therefore the faster it needs to re-seat often requiring higher seat pressure valve springs.alright this might sound a bit noobish. but higher lift is better for more top end and a higher power band right? or am i confusing that with duration? im assuming the pi heads had lower lift to make power down low with their more restrictive heads and the pi heads are vice versa?
Actually it goes like this:yeah thats what i meant. my mistake. so someone posted earlier that the cams i posted up were a little more aggresive compared to theirs. assuming they were pi cams as well. but then somebody pointed out they were npi cams they turned out to be a "stage 1". is there that much difference in cams even in the aftermarket for npi and pi heads? what would the 268H be comparable too in a pi aftermarket cam?
Antirice98 Your car sounds wicked. I love good sounding cams and tailpipes. They just make them sound alot better.
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