The problem with all this stuff is the development time... time is money. I
have a
source that could fabricate just about anything. However, when you compare
$500 in
gears to $45.00 an hour shop time, you don't get a lot of development and
fabrication time. This is not an easy fix, and doing it right is paramount, as
echoed by the "purchase valves and pistons" comment! I welcome continued
research
in this area, and I will continue to do so too. If you come up with good ideas
and
actual gears, etc and need a fabricator, let me know.
Greg Burrows
Adam Bradley wrote:
> How about a single chain from the crankshaft to the camshaft and find
> another way to turn the oil pump and distributor? I believe the one
> supercharged car (who owns that car?) has crank triggered ignition and a
> dry sump oil pump. How hard would it be to implement both of those with a
> single chain? And would gears from an L-series be usable or adaptable,
> since they must already have the proper crankshaft gear to camshaft gear
>ratio?
>
> At 10:35 AM 5/9/2002 -0500, Hall, Phillip wrote:
> >I wish I had a U20 in front of me, but how about using the lower chain to
> >jackshaft and cover from a 1600, then use a belt up to the head with the
> >crank pulley on the dry side. The head would have to have a plate/seal
> >around the cam to block oil. Head to belt clearance still may be an issue.
> >Just an idea - Ok, back to my real job.
> >
> >Phil
> >SEROC
> >
> >-----Original Message-----
> >From: Brian Hollands [mailto:Brian_Hollands@adp.com]
> >Sent: Thursday, May 09, 2002 9:47 AM
> >To: Datsun Roadster Mailing list
> >Subject: RE: A crusty marine engineers armchair solution to U20 timeing
> >chains
> >
> >
> >If you do that, add pistons and a set a valves to your next order from the
> >vendors. Belts soaked in oil don't work for long.
> >Brian '69 2000
> >Tampa, FL
> >http://web.tampabay.rr.com/oilleak/
> >
> >
> >
> >-----Original Message-----
> >Therefore, all someone has to do is find the right toothed pullys
> >from the right donor car that will fit inside the U20 front cover
> >and then arrange a spring loaded tensioner mounted to maintain
> >tension on the back (smooth) side of the toothed belt.
> >
> >/// datsun-roadsters@autox.team.net mailing list
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> >
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>
> Adam Bradley
> '70 Datsun 1600 Roadster SPL311-28181
> '66 Datsun PL411 sedan PL411-022447
> http://www.picturetrail.com/abend
>
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