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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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 Posted: Tue May 27, 2014 4:57 am Post subject: |
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Too bad with the pistons...
I have found a guy that will help me with the spacers. I play it safe and make them 2,7 mm thick to retain stock "top-piston-position in the cylinder" (in Swedish "vändhhöjd", but I don't know the english word).
The compression ratio will be a tad bit low (I guess 7.7:1), but I don't want to machine in my original almost-untouched Okrasa heads.
I am planning on use Wolfsburg West push rod extenders as well. |
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volksartist
Samba Member
Joined: May 26, 2004
Posts: 264
Location: Muskoka
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| Posted: Tue May 27, 2014 10:58 am Post subject: |
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| If there are set up costs etc. I would take a set or two of the spacers for stock cylinders. Maybe better value for many sets? |
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snowbug
Samba Member
Joined: June 12, 2005
Posts: 167
Location: Oshawa Ontario Canada
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| Posted: Tue May 27, 2014 1:16 pm Post subject: pistons |
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| volksartist wrote: |
| If there are set up costs etc. I would take a set or two of the spacers for stock cylinders. Maybe better value for many sets? |
I am thinking about doing this to my pistons and not using spacers. Don`t need spacers in the pushrods either. I will be running stock heads . They have cavernous combustion chambers. http://www.thesamba.com/vw/forum/viewtopic.php?t=592963 |
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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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| Posted: Wed May 28, 2014 2:13 am Post subject: |
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| volksartist wrote: |
| If there are set up costs etc. I would take a set or two of the spacers for stock cylinders. Maybe better value for many sets? |
Sorry, he had them made yesterday. I did trade the job for vintage VW parts. |
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snowbug
Samba Member
Joined: June 12, 2005
Posts: 167
Location: Oshawa Ontario Canada
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| Posted: Wed May 28, 2014 2:44 pm Post subject: Re: pistons |
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| snowbug wrote: |
| volksartist wrote: |
| If there are set up costs etc. I would take a set or two of the spacers for stock cylinders. Maybe better value for many sets? |
I am thinking about doing this to my pistons and not using spacers. Don`t need spacers in the pushrods either. I will be running stock heads . They have cavernous combustion chambers. http://www.thesamba.com/vw/forum/viewtopic.php?t=592963 |
So I machined the top of a scrap 36hp piston to clear the head. 3mm off the edge. Then cut it in half to see how much thickness is left in the crown. I am still looking for a new 77.45 piston and 2 cylinders. |
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[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
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| Posted: Wed Nov 15, 2017 5:07 pm Post subject: Re: 36hp Stroker Crank Wolfsburg West |
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| Why Can the Stock 36hp Connecting Rod Bolts Be Shorten to Clear the 69,5 Crank /Cam .I See all These Other Rods with Small Length Rod Bolt Like the AA Piston 356 H Beam Rods Use 1.4x1/4 Bolts ,and Got Me Thinking Why We Dont Use Shorter Bolts .Any Thoughts About Useing Shorter Bolts on Stock Connecting Rods ..Anybody ?? Thoughts???? |
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volksartist
Samba Member
Joined: May 26, 2004
Posts: 264
Location: Muskoka
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| Posted: Thu Nov 16, 2017 9:06 am Post subject: Re: 36hp Stroker Crank Wolfsburg West |
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| Not sure what you mean?. The shoulder on the rod cap is the clearance issue. The bolt should be fine. |
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[email protected]
Samba Member
Joined: June 24, 2015
Posts: 719
Location: Rialto. CA
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| Posted: Thu Nov 16, 2017 11:55 am Post subject: Re: 36hp Stroker Crank Wolfsburg West |
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| THATS MY POINT IM GETTING AT. IF WE USED SHORTER BOLTS THAT WOULD ALLOW US TO CUT THE SHOULDER SOME MORE .THE STOCK LENGTH ON THE OEM BOLT IS 1-7/16 IN LENGTH IF I WERE TO CUT THE BOLT BACK SOME JUST SAY TO 1-1/4 THATS ABOUT 3/16 DIFFERENCE THAT CAN CLEAR EVEN BETTER FOR THE 69.5 CRANK WITH PREA SUPER CAM ..DO YOU THINK I WOULD HAVE A PROBLEM WITH TORQUE OR OTHER PROBLEMS IM NOT SEEING ...ANYONE SHINE ON ME .. |
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volksartist
Samba Member
Joined: May 26, 2004
Posts: 264
Location: Muskoka
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| Posted: Thu Nov 16, 2017 12:03 pm Post subject: Re: 36hp Stroker Crank Wolfsburg West |
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I am not too confident in taking away strength from the stock rod but others here have more experience. I trimmed my stock rods, weight matched them and sent them for re-sizing. The machinist forgot to mark all the matching pairs. The balancer did not want to touch them, I got pissed off and bought AA H beams. They center up easily and should be way overkill for my motor. Good peace of mind.  |
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snowbug
Samba Member
Joined: June 12, 2005
Posts: 167
Location: Oshawa Ontario Canada
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| Posted: Sun Nov 19, 2017 1:30 pm Post subject: Re: 36hp Stroker Crank Wolfsburg West |
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| [email protected] wrote: |
| THATS MY POINT IM GETTING AT. IF WE USED SHORTER BOLTS THAT WOULD ALLOW US TO CUT THE SHOULDER SOME MORE .THE STOCK LENGTH ON THE OEM BOLT IS 1-7/16 IN LENGTH IF I WERE TO CUT THE BOLT BACK SOME JUST SAY TO 1-1/4 THATS ABOUT 3/16 DIFFERENCE THAT CAN CLEAR EVEN BETTER FOR THE 69.5 CRANK WITH PREA SUPER CAM ..DO YOU THINK I WOULD HAVE A PROBLEM WITH TORQUE OR OTHER PROBLEMS IM NOT SEEING ...ANYONE SHINE ON ME .. |
The length of the bolt is not a problem. Only need a tiny bit of grinding from the side of the cap as you can see.
_________________
Old enough to remember THRILLS, the gum that tastes like soap. |
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