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Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 16:21
by maxstu
Deffo not working for me :roll:
Thus is what happens when you put oil rings against spring in place according to Grant instructions. I need to space rings out further to not get caught in sleeve cut out.
Image

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 16:27
by maxstu
Er l mean closer to spring ring join. Not further out.
:oops:

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 17:39
by 937carrera
I can't make sense of that picture, it looks like there is a huge gouge missing from the piston. Can you take one from a bit further away ?

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 17:57
by ajsimmo
Ah yes, I see your issue now. The last ones I did with that set up were AA Performance, and I set them all at 12 and 6 o'clock alternately. So top ring at 12 o'clock as per VW/Bentley, 2nd at 6, first oil scraper 12, spring ring join at 3 or 9, 2nd scraper at 6.
That way nothing pops out the cylinder cutouts. They went in easily first time with a gentle but firm push.

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Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 18:01
by 937carrera
Ah, I get it now :)

Go to a different time zone

1 & 7, or 2 & 8

I believe the rings rotate in use anyway

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 18:08
by maxstu
937carrera wrote: 18 Aug 2020, 18:01 Ah, I get it now :)

Go to a different time zone

1 & 7, or 2 & 8

I believe the rings rotate in use anyway

:ok :ok

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 18:14
by 937carrera
That's kind, but it was Andrew that identified the issue ;)

Re: Heads Off Due To Pressurised Coolant

Posted: 18 Aug 2020, 18:22
by maxstu
ajsimmo wrote: 18 Aug 2020, 17:57 Ah yes, I see your issue now. The last ones I did with that set up were AA Performance, and I set them all at 12 and 6 o'clock alternately. So top ring at 12 o'clock as per VW/Bentley, 2nd at 6, first oil scraper 12, spring ring join at 3 or 9, 2nd scraper at 6.
That way nothing pops out the cylinder cutouts. They went in easily first time with a gentle but firm push.

Sent from my ONEPLUS A3003 using Tapatalk

:ok :ok

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 12:23
by maxstu
Back to this. More scraping and cleaning out of piston oil cut out allowed me fully close ring compressor.
Im going to place rings as per Grant instructions
First comp at 12. Second comp at 6. Spring ring over gudgeon pin and the two scapers either side to miss cylinder cut out.

Image

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 13:03
by ajsimmo
That'll work

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Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 13:10
by maxstu
ajsimmo wrote: 22 Aug 2020, 13:03 That'll work Image

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It did! My first wasserboxer insertion :lol: piston arrow facing flywheel too. Must not forgot green and black seals...repeat! Must not forget green and black seals...all day

Image

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 13:17
by maxstu
Barrels honed the RD250 way. By hand with P280. Washed in petrol afterwards.
What about the upper wear lip?

Image

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 15:27
by maxstu
Two in. Other side tomorrow.

Image

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 16:18
by 937carrera
Looking nice & clean now :ok

Just one thing....... and I haven't got one I can look at for now, but is that a number 1 in blue on the piston ?

If it is, then that looks like the left crankcase half to me

Re: Heads Off Due To Pressurised Coolant

Posted: 22 Aug 2020, 17:42
by maxstu
937carrera wrote: 22 Aug 2020, 16:18 Looking nice & clean now :ok

Just one thing....... and I haven't got one I can look at for now, but is that a number 1 in blue on the piston ?

If it is, then that looks like the left crankcase half to me

My marker pen for reminding me. :oops: