Bearing diagnosis?

[Paul Windisch]

[mark tucker]

the pistons are spekled with debris. they are tiny but they are there, thats what causing the lines in the cylinders... look at the end of each line in the pistons and there will usualy be a spec imbeded. as well as some with no lines. they are eazy to pick out with a sharp hard tool I like dentist picks to do it. it takes a while to get them all and dont wory about hurting the piston.did a hole if you wish it wont hurt squat, just get every peice out!!! you can scratch across and feal and hear the steel/iron in the skirts with a pick.some will cum right out and some will take some work. rough honed replacement cylinders fill the skirts with iron as the rings wear out. thus the need to "knock the tooth off the hone pattern" this greatly reduces the blow by and shedding of debris in to the oil&skirts. dont forget to add a spin on oil filter.

[TomSimon]

It sounds like you purchased a VW from what I call a 'flipper', a guy who pieced something together, a used engine from under the work bench, slapped on some chrome tin for nice pictures, slapped it together and "send it!" About what I'd expect from a used VW where the owner 'didn't know much about the engine'. A worn out POS, but it drove, and idled, able to ship it as a running vehicle. Pretty typical, actually. Hopefully you boought it with the possibility it needed a rebuild, in mind, and budgeted $3k-$5k depending on goals.

Again, not a horrible or dishonest deal, unless it was mis-represented as 'a one-owner, numbers matching time capsule, deal of the century w/rebuilt engine'. If so, you were taken advantage of.

Moving forward, if you plan to love and keep this car, it's time for a quality rebuild. Set a realistic budget, connect with a local VW machine shop. You might find that having a reputable engine builder will save money and time in the long run, and move your purchase from 'project' to 'runner and driver' status much quicker and less painful. Budget and goals.

The bearings show trash has run through it, probably super dirty oil with carbon chunks have circulated though it. Nothing out of the ordinary for old cars. The W110 cam is puzzling, but a new cam is part of any build, they are cheap, cam, lifters, and bearings $100-$200 depending on what you want. . the 'std' marking is just 'standard' cam bearing. Those cam bearing look fine, by the way, but replace them with a rebuild. The case where the cam bearings fit almost never need attention, but the lifter bores need to be scrutinized for wear, repaired if needed, given the that trash has gone through the engine.

There are many threads on the sequence of a complete rebuild, which is what you need. Start with goals, them break it all down and have the ca application, bu these things are getting old, so the case needs to be looked at for case spreading, bad head stud threads. Typically you are looking at doing an align bore of the case, regrind the crank, and have the machine shop supply new oversize bearings to match.

I hope that helps
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2-time NASA Pro Racing Champion, Bonneville 130 Club and 150 Club Memeber, BRS Pro Gas racer

[petrol punk]

I am going to piggyback off this thread since your case is so similar to mine. Pulled these out after 500 miles. It was making an awful knocking sound and the oil looked like an aluminum based syrup. This was ran with the Mexican style oil pump/filter combo. I'm guessing this is oil contamination too? Unfortunately pulley side main journal has a deep gouge in it and the thrust bearing journal borderline fails the fingernail test as well.

Don't mind the white powder chalky looking stuff here. Thought I picked the brake cleaner can.

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36hp '56 European DeLuxe oval, '70 bug 1835cc dual 36DRLA, and a '98 4x4 5spd single cab Tacoma

[Who.Me?]

I was chased up for some pictures of the rod bearings. Finally had a chance to split the rods this evening...

I've got the case and crank ready to go off for machining. Just need to find a decent strength box to ship them in.
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Andy


Looking for info on my truck's history. Are you from Campbell California or nearby. Do you recognise it? ... http://www.thesamba.com/vw/forum/viewtopic.php?t=636786

[txoval]

Your bearings (Mains) look like too tight of clearances...

[modok]

A lot of dirt in there. The more dirt stuck in the bearing, the "tighter" they get.

[PEPPE]

the case may be loose in the main bearing seats, if the rebuild is recent they don not linebore the case. crank looks damaged (cut) where the flywheel shims ride.

[Who.Me?]

[PEPPE]

yes, 26mm is standard for dished cam, so no really "HD"

[Who.Me?]

Thanks. CB Performance's description inclues this line that I'd overlooked before...

[RWK]

Poorly maintained stock oil bath air cleaner causes a lot of dirt ingress also, one of the reasons VW used oil bath, helps with the lack of oil filter.
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73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530

[mark tucker]

wow!! those main & rod bearings are full of shit!!!! was the crank oil gallys cleaned good before assy???or did the camshaft die too?? yikes!