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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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 Posted: Fri Jun 13, 2014 8:25 am Post subject: |
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| if your sure the pistons are out that far I would of sent them back. go for the longer rod&stack the cyl shims to get what you think you want.or stack them to get what you need. and rarely are the shims what they say they are.so..... a .060 may be a .065 witch will work just fine for a .070". |
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stan_tichomirov
Samba Member
Joined: May 24, 2005
Posts: 1719
Location: San Francisco, CA
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| Posted: Sat Jun 14, 2014 1:42 am Post subject: |
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Swap pistons around, see if deck measurement moves with the piston. Was the case decked? I had similar DH with 92 thick wall cylinders, my situation was worse because one side was .010 more than the other. I had the case decked .020 on one side and .010 on the other.
Stan
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Jansen Enterprise
My 1835cc build
My budget 2276 build |
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sloboatnova
Samba Member
Joined: September 20, 2009
Posts: 989
Location: Broken Arrow, Ok
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| Posted: Mon Jun 16, 2014 5:44 am Post subject: |
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I've checked my jugs and they are within a .003 of each other. I'm just gonna pull the pistons and measure them at work with a calibrated heigth gauge on an inspection table.
As for the case, it appears that the deck was cut when they machined it for 94's. After inspecting the pistons, I'll check the rods, then if I haven;t found my .015 variance, I'll split the case and check it's deck. fun fun
If it's the pistons, I cant send them back. I bought them from an individual.
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Ms Hoover, I glued my head to my shoulder.
3BT Baja build page
http://www.thesamba.com/vw/forum/viewtopic.php?t=417564&highlight=3bt+baja |
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sloboatnova
Samba Member
Joined: September 20, 2009
Posts: 989
Location: Broken Arrow, Ok
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| Posted: Tue Jun 17, 2014 8:19 am Post subject: deck height |
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Measured my pistons. They are within .001 of each other. The problem is my rods. My #2 rod (which is the variant deck height) is .017 shorter than the rest.
So, if I buy the 5.5" rods and use spacers, I need a .070 shim to get my desired .040 deck height (currently at .070 without shims), but no one sells a .070 shim.
Can I use 2 shims? maybe a .040 and .030?
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Ms Hoover, I glued my head to my shoulder.
3BT Baja build page
http://www.thesamba.com/vw/forum/viewtopic.php?t=417564&highlight=3bt+baja |
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sloboatnova
Samba Member
Joined: September 20, 2009
Posts: 989
Location: Broken Arrow, Ok
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| Posted: Tue Jul 29, 2014 5:12 pm Post subject: |
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So I put the Scat pro-street 1.25-1 rocker assembly on my new heads to start checking geometry. I started at zero shims just to see where it is at. It definately will need some shims. Now I cant get the stupid things off. Don't know what I did to get them stuck, but they will not come off. I've tried everything. I'm so pissed, I tried prying at the blocks and the block snapped. I still ant get the damn things off. AAAAAHHHHHHH!!!!!!
Yes, the nuts are off.
Any ideas? I'm ready to start swingin a sledge hammer at it.
edit - pro-street rockers, not pro-comp.
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Ms Hoover, I glued my head to my shoulder.
3BT Baja build page
http://www.thesamba.com/vw/forum/viewtopic.php?t=417564&highlight=3bt+baja
Last edited by sloboatnova on Thu Jul 31, 2014 9:59 am; edited 1 time in total |
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stan_tichomirov
Samba Member
Joined: May 24, 2005
Posts: 1719
Location: San Francisco, CA
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| Posted: Tue Jul 29, 2014 5:27 pm Post subject: |
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I've done that. I also snapped the rocker block in frustration. Double-nut the stud and back it out, replace with another stud. You probably put the shafts on the wrong way, that was my problem.
Stan
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Jansen Enterprise
My 1835cc build
My budget 2276 build |
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sloboatnova
Samba Member
Joined: September 20, 2009
Posts: 989
Location: Broken Arrow, Ok
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| Posted: Tue Jul 29, 2014 6:27 pm Post subject: |
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Your fix is right. Double nutted jam nuts. Sucks diving 13 miles round trip to buy 80 cents worth of nuts, but it worked.
What I did wrong was I didn't tighten the studs down. Only finger tight. Oops. I hope a replacement block isnt hard to get.
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Ms Hoover, I glued my head to my shoulder.
3BT Baja build page
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sloboatnova
Samba Member
Joined: September 20, 2009
Posts: 989
Location: Broken Arrow, Ok
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| Posted: Wed Jul 30, 2014 5:33 am Post subject: |
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What is the correct way to seat the rocker arm studs into the head? Double nut and tighten with a torque wrench? If so ,how much torque?
Also, would I be safe to use the mounting block from a stock rocker assy in place of the one I broke?
Thanks
_________________
Ms Hoover, I glued my head to my shoulder.
3BT Baja build page
http://www.thesamba.com/vw/forum/viewtopic.php?t=417564&highlight=3bt+baja |
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