Oil pump type?

[lbszr]

Does anybody know if the pump is a gerotor or gear design, or have pictures of the inside of the oil pump? Just courious.

[tomtom72]

In the FSM the blow up picture shows a gear within a gear type. Isn't that a gerotor type pump vs the old fashioned meshed gear type in the old sbc motors?


Tom

[lbszr]

Thanks for the info where to find it. I didn't see it in the supplement and didn't think to look in the big book. I think your right, looks like a gerotor.

[HAWAIIZR-1]

Originally Posted by lbszr

Does anybody know if the pump is a gerotor or gear design, or have pictures of the inside of the oil pump? Just courious.

Here is photo of the inside of the pump when I rebuilt mine.

[lbszr]

That's some flowand thanks for the picture, that must be part of the reason these lt5's are hard to break.

[HAWAIIZR-1]

Originally Posted by lbszr

That's some flowand thanks for the picture, that must be part of the reason these lt5's are hard to break.

You're welcome. I think you are right about our oil pumps and not sure there has ever been a failure on one of these.

[shaynezrl]

Originally Posted by HAWAIIZR-1

Here is photo of the inside of the pump when I rebuilt mine.

Craig,

How was rebuilding the pump? Was it something hard to do? I am thinking of doing the same thing to mine.

[HAWAIIZR-1]

Originally Posted by shaynezrl

Craig,

How was rebuilding the pump? Was it something hard to do? I am thinking of doing the same thing to mine.

Shayne,

Here is a post I did on a blog about the rebuild if it will help you.

http://blogs.yahoo.co.jp/corvettezr1....html?m=lc&p=4


The page before towards the botton explains the carbon seal replacement and that is vital; thanks to Jerry for all his technical advice on this and recommending the new seal:

http://blogs.yahoo.co.jp/corvettezr1....html?m=lc&p=3



To be honest, I think I was being very anal when rebuilding mine and I can't even imagine how these could fail other than the carbon seal side? I am sure I would have been fine, but since I was doing a rebuild it seem the right thing to do and hardly worn inside from visual inspection. Just old school and when rebuilding the SBC or BBC I used to always put in a new oil pump. Since I had a new OEM late model pump I just swapped the guts out to be able to sleep at night and hopefully with all the redline WOT the LT5 will stay together.

Best wishes.

Craig

[shaynezrl]

Craig, Thank you the links you did a great on the write up. I admired your patient and skill.

Shayne

[HAWAIIZR-1]

Originally Posted by shaynezrl

Craig, Thank you the links you did a great on the write up. I admired your patient and skill.

Shayne

You're welcome and thanks for your thoughts. I still can't believe I rebuilt the LT5 myself, but it was a great learning experience and good feeling.

Craig