dj219957

I will be replacing my sump on my 93 wrx this weekend.
The new sump came from a car with bearing failure. it was a terrible mess.
I have spent hours tonight scrubing it with boiling water and rags. I have even had cotton buds in there! I keep finding gold flakes no matter how muh i clean it!.... and they arnt frosties
Am I going over the top here or does the sump really need to be spotless?
How do the engine builders like api and such clean the sumps? Surely they dont have hours to spare like I have?
Im guessing the oil filter will clean out any other tiny bits that I have missed?

Can anyone advise what how they cleaned theirs before rebuilding and to what extent.
I think I have got 98% of it out now but there are so many little cracks and crevises that could have gold flakes hiding in them.

172sport

iTrader: (6)

Its not hard, water soluble degreaser, paint brush the worst off leave to soak for a while then jet wash out.
It wont even take an hour to be clean as a whistle.

dj219957

this one was auwful. and you have to get right in under neath the bottom baffles to get at it all. i think its nearly there now. might get the jet wash on it and then put it in the airing cuboard to dry. my uderstanding is that it really does have to be spotless otherwise BANG.

172sport

iTrader: (6)

Yup 100% clean

dj219957

ok thanks, its not me been silly. will try some degreaser in there sat with jet wash.

scubbay

iTrader: (61)

a new sump aint dear £50 ish iirc

silent running

Wynn's Carb Cleaner will get that cleaned out in no time. Then jetwash it to be sure.

APIDavid

iTrader: (4)

Ours go in a big rotating wash plant at 60c that tends to get them good and clean. Then we hand finish them with a hot organic partswasher and an air line.

It takes time, but must be perfect. The filter should collect particles, BUT the oil sloshes around in the sump and gets up into the lower portion of the bores and if there are any particles left it can scour the lower side skirts of the pistons. That is sump oil and is obviously full of all sorts of crap, long before it ever gets anywhere near the filter.

We fill 'new' engines with oil on the test rig here and do all of our tests. Then that oil stays in for the road test, which can be anywhere between 30 and 50 miles.

Once that test is Ok, we drop the oil out and fit a new filter and fresh oil. Long before you ever see your car.

Best I can offer.

David

Agents for:
Simtek, the most exciting new Ecu for years
Buddy Club exhausts
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AP Racing brakes and clutches
And of course; the well known APi Performance Exedy organic clutch

www.apiengines.com

01926 614333

dj219957

thanks david. i will spend a bit more time on it. its nearly 100%.