R55 Cooper S

R55 Cooper S

Author
Discussion

SlimJim16v

3,600 posts

111 months

Sunday 12th January 2020
quotequote all
Some oil pumps won't work unless primed. I've heard Vasaline* is used to pack them.

*other lubes are available.

scrw.

Original Poster:

2,301 posts

158 months

Sunday 12th January 2020
quotequote all
I have on a standard gear pump on other engines, but the mini one sits in the oil in the sump, and is a sealed unit. Hope I have just missed something stupid.

SlimJim16v

3,600 posts

111 months

Sunday 12th January 2020
quotequote all
scrw. said:
Hope I have just missed something stupid.
Hopefully. I seen, and done some very silly things.

scrw.

Original Poster:

2,301 posts

158 months

Monday 13th January 2020
quotequote all
hmmm, well, the oil pump is not sucking, is being driven from the crank okay, so it looks like the pump has packed up or the pressure relief valve is stuck, but do I repair & trust it or put a new one in......

scrw.

Original Poster:

2,301 posts

158 months

Tuesday 14th January 2020
quotequote all
Bought a new pump, for the sake of £110 its not worth risking the whole motor. Work resumes in a couple of days.

CoolHands

13,229 posts

163 months

Tuesday 14th January 2020
quotequote all
Yeah keep us updated, interested to see if new pump solved problem

scrw.

Original Poster:

2,301 posts

158 months

Tuesday 14th January 2020
quotequote all
I am wondering if lack of oil in the pump is stopping it creating an initial vacuum, and filling the pressure side of the pump before fitting it would sort the problem (that itself indicates a worn pump I think). But faith lost in the old pump now, not risking it. I will fill the pressure side of the new pump on fitting it (apparently they dont leak through) just in case it helps the new pump get started. I may strip down the oil pump at some point out of curiosity, but its not an item you can really play around with solutions until you find the issue.

jackofall84

447 posts

27 months

Tuesday 14th January 2020
quotequote all
scrw. said:
I am wondering if lack of oil in the pump is stopping it creating an initial vacuum, and filling the pressure side of the pump before fitting it would sort the problem (that itself indicates a worn pump I think). But faith lost in the old pump now, not risking it. I will fill the pressure side of the new pump on fitting it (apparently they dont leak through) just in case it helps the new pump get started. I may strip down the oil pump at some point out of curiosity, but its not an item you can really play around with solutions until you find the issue.
Really good thread and enjoying seeing the progress, Just to say that having a fluid on the downstream side of the pump (the outlet) shouldn't make any difference to the upstream side (the inlet) the main reasons a functioning pump won't start is due to insufficient NPSH, i.e. not enough pressure on the inlet to begin with.

scrw.

Original Poster:

2,301 posts

158 months

Wednesday 15th January 2020
quotequote all
Well my oil pump off ebay turned out to bea genuine BMW one, always nice smile

2020-01-15_09-43-22 by Old_Chad, on Flickr

2020-01-15_09-40-09 by Old_Chad, on Flickr

scrw.

Original Poster:

2,301 posts

158 months

Wednesday 15th January 2020
quotequote all
And it works perfectly, I did fill it with oil from the top hole and wound it back slowly until the oil dribbled out of the pickup strainer, other than that it just got bolted in, had oil in the filter after a few seconds of cranking. Inlet side all on and injectors connected back up, just waiting for the sportcat to turn up (hopefully friday) and I can finish up. I think tomorrow I will put the rads into the front housing ready for finishing up after fitting the exhaust up.

Old oil pump is in the corner of the garage, I may pull it apart to see whats going on in the future, however it may just get skipped. Productive evening drink

GaryF

850 posts

221 months

Thursday 16th January 2020
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Excellent news thumbup

What sort of DP have you gone for? I've an Akrapovic 100 cell fitted and it mkaes a great improvement to sound and performance (in conjuntion with remap).

scrw.

Original Poster:

2,301 posts

158 months

Thursday 16th January 2020
quotequote all
Cobra 200 cell, the say that it will not throw and CEL's on an otherwise stock motor so will see, not planning on getting it mapped just yet, will also go with a custom made stainless cat back exhaust removing the centre box.

scrw.

Original Poster:

2,301 posts

158 months

Thursday 16th January 2020
quotequote all
old.....
2020-01-16_09-03-44 by Old_Chad, on Flickr

Ebay special intercooler and new air con and water rads. Brackets on the intercooler are a touch out, my OCD may survive once it is hidden behind the bumper.

2020-01-16_09-04-42 by Old_Chad, on Flickr

All stop until the downpipe arrives now.

GaryF

850 posts

221 months

Friday 17th January 2020
quotequote all
Nice and shiny smile

I've got the Airtec upgraded intercooler - is that what that one is?

Edited to say, just spotted you called it an "Ebay Special" intercooler smile

Edited by GaryF on Friday 17th January 11:55

scrw.

Original Poster:

2,301 posts

158 months

Friday 17th January 2020
quotequote all
Same design as the Airtec one, just £130 rather than £400 odd. Finish isn't as good but worth a punt.

V6 Pushfit

16,857 posts

78 months

Friday 17th January 2020
quotequote all
Great thread have you done this before or using a manual?

scrw.

Original Poster:

2,301 posts

158 months

Friday 17th January 2020
quotequote all
done rebuilds before, but not on a mini, my Haynes is getting grubby LOL. Nothing too difficult, if anything it is an easy motor to work on, once you can get at it!!

R12many

164 posts

60 months

Sunday 19th January 2020
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Love threads like these. Great work and hope everything goes as planned.

scrw.

Original Poster:

2,301 posts

158 months

Monday 20th January 2020
quotequote all
Fed Ex just dropped my Cat/downpipe off, spannering tonight smash

scrw.

Original Poster:

2,301 posts

158 months

Tuesday 21st January 2020
quotequote all
Work getting in the way of spannering :-(

Anyway, Cobra next to the stock downpipe, i see why they say it shouldn't throw a CEL as the 2nd O2 sensor is stepped away from the exhaust flow by an inch or so.

IMG_20200121_195428 by Old_Chad, on Flickr

IMG_20200121_200700 by Old_Chad, on Flickr

All in, just need to finish some hoses around the thermostat housing then the front is going back on, hopefully finished by the weekend.....

IMG_20200121_201958 by Old_Chad, on Flickr