Oil pump drive gear plastic broken.. and wear pattern. Opinions?
#31
I plan to get rid of the HV pump when I put in a K-member hopefully later this year.
#33
If you're not torquing it down you have no idea how much torque you're putting down on it compared to me...
For all we know you could be tightening it down more, just lucky it hasn't cracked?
#34
When I pulled the intake a couple of days ago I checked the oil pump drive
and the bolt was loose. The car only has about 5k miles since I torqued the
bolt to 13 ft-lbs. My plastic was not broken though. I just cleaned the bolt
and the hole really good with acetone, used some blue thread locker on the
bolt and torqued it back to 13 ft-lbs.
and the bolt was loose. The car only has about 5k miles since I torqued the
bolt to 13 ft-lbs. My plastic was not broken though. I just cleaned the bolt
and the hole really good with acetone, used some blue thread locker on the
bolt and torqued it back to 13 ft-lbs.
#35
I know it's not a lot, and maybe that isn't the real problem that's cracking the POS. But I still say you don't need to torque it very tight. Just clean the hole with acetone like the other guy said and put some locktite in there and snug the bolt down and believe me, it works. I can make one of those metal retainers in the machine shop at work if I want, but I've never needed to. It's a bad design, no doubt about it - I won't argue that point.
#36
I used my sdtock one before.....I never tqed it. I cranked down on it and it never broke. I still have it.
Probly a shaft or something binding up, I would ditch that thing asap. Its just trouble. The high volume pump will kill it
Probly a shaft or something binding up, I would ditch that thing asap. Its just trouble. The high volume pump will kill it
#39
Years ago, I recall talking with Mike at the MORE shop when I was buying parts and getting advice on a rebuild. I worked with him on several projects. He said he saw a number of those phenolic pump drive components fail and toast an engine. That was enough to convince me I needed one of his little billet 'covers'. He handed me one and didn't even charge me for it. I don't think it cost him much to have them made as it is a very simple design. I wish I had a pic of it.
#40
Dunno why it would be binding.. ARP shaft, standard Melling pump.. pretty common stuff.
#41
Damn, this isn't rocket science! If you want to support the plastic stub housing, just cut a little piece of metal to fit over it, screw it down with some threadlocker (try not to smash it), and call it a day. Otherwise, go out and machine an aluminum distributor shaft housing for it or something.
#42
Damn, this isn't rocket science! If you want to support the plastic stub housing, just cut a little piece of metal to fit over it, screw it down with some threadlocker (try not to smash it), and call it a day. Otherwise, go out and machine an aluminum distributor shaft housing for it or something.
David
#43
#44
It would become a regular maintenance item like a timing chain on a rebuild.
If ya stop it from jumping out(if it breaks) with a plate on top then it could spin and not turn the pump right and wear and get cocked and wear the gear quickly.
Cracking at the bolt hole is the easiest place for it to break. It will find the next weakest point on the little arm after that if it has enough load and spin anyway. If the arm breaks at the housing it could go down???? and spin anyway. Again I don't know how much load it will take to mess it completely up,does any body?
Just better not to take the chance on a $10,000+ engine. Many do- not thinking about it and say it's the pump or something else that broke it, after they toast an engine.
The damn thing is plastic,guys.
#45
Damn, this isn't rocket science! If you want to support the plastic stub housing, just cut a little piece of metal to fit over it, screw it down with some threadlocker (try not to smash it), and call it a day. Otherwise, go out and machine an aluminum distributor shaft housing for it or something.
This a valid concern I'd rather not guess at fixing.. it's not like you pull the intake every oil change to check. Granted it's easy enough to do but still.