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Using a Front Case with Crankwalk wear

greekgodchaos

Proven Member
424
16
Jul 4, 2007
Vancouver, Washington
I have a front case with a giant hairline crack that is causing on oil leak.
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I have an old case from my previous engine that crankwalked, so there is some slight wear in the case on the back side. I measured how much wear there is and its only 0.32mm, so hardly anything.

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There are no cracks (aside from your usual casting flaws and crap) but no cracks that go completely through from back to front. I am fairly certain using the case SHOULD be okay, but I just wanted input from other people here. It might also be worth mentioning that this is an OEM case (both the cracked and uncracked ones)
 

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
I would not use that pump. Follow the procedure in the service manual and measure the case accordingly. You can buya new acl pump for 170.... now worth it in my estimation. Oil pump and wear being used in the same sentence. No thanks
 

greekgodchaos

Proven Member
424
16
Jul 4, 2007
Vancouver, Washington
I would not use that pump. Follow the procedure in the service manual and measure the case accordingly. You can buya new acl pump for 170.... now worth it in my estimation. Oil pump and wear being used in the same sentence. No thanks


I do want to clarify it's not the pump that's worn, it's that ring around the crankshaft opening that's worn 0.32mm. The pump itself is fine visually, but I will double check for any wear and post back shortly.
 

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
I do want to clarify it's not the pump that's worn, it's that ring around the crankshaft opening that's worn 0.32mm. The pump itself is fine visually, but I will double check for any wear and post back shortly.
No i understand.....its just not worth bolting a used worn pump on any engine esp considering you can have one new for 170 bucks. I understand the damage was caused by excessive endplay and doesnt necessarily effect the area of the pump that makes oil pressure. Its not worth all the hassle imo, buy a new pump and be done with it....
 

jakk220

Proven Member
1,300
292
Nov 13, 2010
Akron, Ohio
I wouldn't. A new oil pump is only a drop in the bucket compared to the money it can cost you to replace the damage from using it. Not to mention if it was on an engine that crankwalked it could, and likely does, have metal in it. When my motor crank walked I scrapped damn near everything from the head down.
 

greekgodchaos

Proven Member
424
16
Jul 4, 2007
Vancouver, Washington
Decided to just go with a new ACL oil pump case. The gear driving and driven wear on the case was way out of spec.

This is why I love these forums and fellow Tuners. Thanks for your input, more money shall be thrown into the beast.

Just want to add, a new ACL pump runs about $125 new on eBay =)
 
Last edited:
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