Author Topic: OOPS part 2 from across the country  (Read 7727 times)

Reply #30December 23, 2011, 09:52:58 am

R.O.R-2.0

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Re: OOPS part 2 from across the country
« Reply #30 on: December 23, 2011, 09:52:58 am »
looks like those cups are not sticking up at all..
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #31December 23, 2011, 12:27:56 pm

theman53

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Re: OOPS part 2 from across the country
« Reply #31 on: December 23, 2011, 12:27:56 pm »
They are not.

I took the turbo off and inspected it. While rolling the head over #2 precup fell out. I tapped on #1 and #4 and they were loose. I think it must have been a precup issue. I put 3 peen marks into the head to help hold them and it still did this.

I talked to my machinist who did my block but not my head. He said he always machines them separately and NEVER puts them in if they don't stick out at least .002". I think this is the only thing I could have done differently. Made sure the precups stuck up further.

Reply #32December 23, 2011, 12:33:49 pm

rabbitman

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Re: OOPS part 2 from across the country
« Reply #32 on: December 23, 2011, 12:33:49 pm »
This scares me, I just did the HG on my rabbit and all of the precups where loose/easily removable. I peened 'em in and they felt pretty tight but I don't recall that they stuck out at all......
'82 Rabbit, I put on a euro vnt-15, 2.25" DP, 2.5" exhaust, the result.....it whistled.

I removed the turbo, made a toilet bowl 2.5" DP, the result....it was deafening. Now it has a homemade muffler up front and a thrush in the rear, the result.....less loud.
Watch: AGENDA, GRINDING AMERICA DOWN

Reply #33December 23, 2011, 01:10:16 pm

R.O.R-2.0

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Re: OOPS part 2 from across the country
« Reply #33 on: December 23, 2011, 01:10:16 pm »
They are not.

I took the turbo off and inspected it. While rolling the head over #2 precup fell out. I tapped on #1 and #4 and they were loose. I think it must have been a precup issue. I put 3 peen marks into the head to help hold them and it still did this.

I talked to my machinist who did my block but not my head. He said he always machines them separately and NEVER puts them in if they don't stick out at least .002". I think this is the only thing I could have done differently. Made sure the precups stuck up further.

i went peen happy.. i must have peened the bores in 20 different spots, and around the edges probably 10 times.. maybe i went overboard, but i needed a small brass hammer to get the pre-cups back in the head after i did all my peening..

my pre-cups were tight in the head after i peened the bores of the cups..
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.

Reply #34December 23, 2011, 07:59:43 pm

theman53

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Re: OOPS part 2 from across the country
« Reply #34 on: December 23, 2011, 07:59:43 pm »
I took the oil pan out and found about a piston worth of material in it. Block is done, the oil squirter and where it bolts into are gone. There is a little hole in the back of the block with a piece of piston in it perfectly covering the hole so I couldn't see it. The rod big end and crank looks fine amazingly, all rod bolts held up, all mains held up, so I am hoping that the crank could be saved as I had it machined for the TDI sproket.
Looks like new everything but a crank.

I heard from a friend of mine to try the sleeve retaining compound. I sell RT-09 ritelock, but loctite has it as 609-at almost 2x the price-  I don't know if it will hold up to the heat, but I don't know how hot it can actually get in that .001" gap. Some of the higher heat red loctite is high temp but might never come out without busting it...but I would rather trash 4 precups if I could buy new each time than have one fall and kill the entire engine.

Reply #35December 23, 2011, 08:23:01 pm

410

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Re: OOPS part 2 from across the country
« Reply #35 on: December 23, 2011, 08:23:01 pm »
I would have been quite surprised if the block had been salvageable.  Hopefully the crank is okay. 
Maybe [dare I say it], it's time to move to a tdi :-X.  No precups to fall out ;).  I'm sure you'll be happy with the aaz though.  The bottom end torque is really nice on the aaz.  That extra .3l makes a big difference.  Let me know if you can think of anything else you need.
   
Toyota truck 4x4 with Mtdi, M-vnt gt1749va, 11mm pump, fmic, smog .216 nozzles.  Sold!
Working on 1993 4runner mtdi, gtb1756vk, 11mm pump, smog .216 nozzles, custom 1" thick adaptor plate, pd150 intake manifold.