Bill's 200 20v, rebuild underway

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Bill's 200 20v, rebuild underway

Postby audios » Thu Oct 19, 2017 7:15 am

That could be, Ill ask Casey how he oriented them when installing. Here is the catch can/ccv set up. Although now I have the two lines going to BMW oil air separator's

I was told my my friend Ivan that i should not be venting out of the VC but only the block and he suggested doing what he on his 4ktq 20v where he had the return to the oil pan above the oil level. im still waiting on pics of his set up....

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Bill's 200 20v, rebuild underway

Postby audios » Sat Oct 21, 2017 6:29 pm

Pulled the piston rings today, seems to be some buildup behind the oil ring, does this look normal? Also the oil ring seems to be smaller in diameter than the middle and talk ring. Normally the VW/Audi oil rings work great and I do not change them, but think I may change these over


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Re: Bill's 200 20v, rebuild underway

Postby audios » Sun Oct 22, 2017 6:17 pm

Pulled the rest of the Pistons and rods tonight, cylinder walls on three and five look scored. ImageImage




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Re: Bill's 200 20v, rebuild underway

Postby audios » Sun Oct 22, 2017 6:18 pm

Pulled the rest of the Pistons and rods tonight, cylinder walls on three and five look scored. ImageImage




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Re: Bill's 200 20v, rebuild underway

Postby audios » Mon Oct 23, 2017 7:21 pm

Found that the top ring was broken in cylinder number four. Looking to purchase rod bearings and the ultimate crankcase breather vent adapter from Marc at EFI express Image


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Re: Bill's 200 20v, rebuild underway

Postby PRY4SNO » Mon Oct 23, 2017 8:01 pm

How deep is the scoring? Tough to tell but looks like it should hone out without requiring a full rebore?
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|| 2010 Golf Sportwagen TDI /// Wifey mobile
|| 1992 80 quattro 20v /// Eventual AAN'd Winter Sled
|| 1990 Coupe quattro /// Because Racecar

|| Spare parts for sale
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Re: Bill's 200 20v, rebuild underway

Postby audios » Mon Oct 23, 2017 8:16 pm

Found that the top ring was broken in cylinder number four. Looking to purchase rod bearings and the ultimate crankcase breather vent adapter from Marc at EFI express Image


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Re: Bill's 200 20v, rebuild underway

Postby WOMBAT » Tue Oct 24, 2017 7:15 am

The poor leak down is making a lot of sense... Glad you're making her new and proper.
Casey O

Current Attire:
- 2007 Audi A3 3.2 quattro

Past Projects:
- 07 Cooper S - 91 200 20vt - 91 90 20v - 85 4000CS - 96 Audi Cabriolet 5 Spd - 02 A4 1.8T - 91 V8 5 Spd - 01 A6 2.7T 6 Spd Sport - 86 5000CS - 91 100
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Re: Bill's 200 20v, rebuild underway

Postby audios » Sun Nov 12, 2017 6:17 pm

Soaking the pistons in seafoam to clean them up, seems to be working wellImage


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Re: Bill's 200 20v, rebuild underway

Postby audios » Mon Nov 13, 2017 5:43 pm

There is definitely some build up in the ring-lands, especially the oil ring. the severity seems to correspond to the leak down #'s. dosent want to clean up with the nylon brushes, will have to look up best way to clean w/o damaging pistons
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Re: Bill's 200 20v, rebuild underway

Postby dana » Tue Nov 14, 2017 9:36 am

Bill, I have a piston ring groove cleaning tool, works pretty well. Looks like this.
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current:
-mk4 tdi wagon with some mods
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past:
-11 second 90q junker
-20vt swapped 90q winter beater
-efi 10vt 4kq
-way too many other long gone urs's, 200's 4000's, b5's
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Re: Bill's 200 20v, rebuild underway

Postby audios » Thu Nov 16, 2017 6:00 pm

been doing a bit of reading, what do you all think of this :

http://www.angelfire.com/biz/snwvlly/bikes/dnthone.htm

Basically saying that you dont need to break the glaze or hone for the new rings...... just trying to make the best decision possible
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