semi-auto / manual engine differences

bullyboy Casual Dubber

24 posts · joined Sep 2002 · 27 Aug 2007, 11:03 am

#608678

Hi. A friends semi-auto 1500sp bug has dropped a bearing. I have a 1600dp (from a manual) to put in but need to make sure I've got the conversion covered.

The differences I know of are:
1. oil pump (presumably just swap the pump off the auto)
2. manifold - need a large (1/2 inch) vacuum pipe attachment on the T piece of the manifold

anything else?
Was there ever a dual-port manifold with the semi-auto pipe fitting, or do I just drill and weld a pipe onto the standard (3-piece) manifold. Current manifold is the single piece single-port type.

Alternatively, does anyone have an OK semi-auto engine that they could bear to part with?

Thanks a lot.
Steve

mackaymanx Custom Title Time!

1,611 posts · joined Jan 2006 · 27 Aug 2007, 12:43 pm

#608686

Some of the kombi dual port centre pieces had a vacuum take off (brake booster).
IRCC the carb is different but I think you can drill out the correct vacuum port and put the fitting in.
You should also check if there were different pumps for the flat or dished cams.

Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."

[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]

mackaymanx Custom Title Time!

1,611 posts · joined Jan 2006 · 27 Aug 2007, 12:51 pm

#608688

Look here http://www.volks.org/ and go to the VW Automatic Reg link

[ Edited on 27-8-2007 by mackaymanx ]

Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."

[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 27 Aug 2007, 1:02 pm

#608690

You will need to change the flywheel or drive plate and adjust the end float

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 27 Aug 2007, 2:02 pm

#608696

apart from the dual oil ATF pump,
the flywheel needs to be removed and the flexplate
bolted on...
You will need to replace the torque converter seal...
001 301 083

best to replace the front engine oil seal
and the o ring in the flexplate....

You will need to make up a flexplate removal tool...
to take off the flexplate and bolt it to the 1600 twin port..
Yes 1600 twin port engines did have the vacuum pipe off the inlet manifold..

to get it going, put the small control valve hose onto the vacuum advance pipe...
it may thump into gear...
You could take the correct pipe off the 1500 carby and drill a hole in the late carby and push the pipe in..

You will need to drain the ATF and renew it...

cheers

Lee

http://community.webshots.com/user/vw68autobug

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

ctefeh Wolfsburg Wizard

479 posts · joined Apr 2005 · 27 Aug 2007, 3:16 pm

#608705

Bullyboy,
The 1500 uses a flat cam semi-auto pump, the twin ports use a dished cam semi-auto pump. I haven't got my SP pump from the states yet so can't tell you if the feed/supply holes line up.

You could weld a 12mm OD pipe fitting to a standard TP manifold set up, carby must be done (assuming you're getting a 34 Pict 3 from somewhere) as others have said.

As Lee has mentioned, getting the flex plate off/on isn't for the faint of heart.

Lastly, if there are no ATF leaks from around the converter, don't pull the torque converter off the gearbox or you'll be replacing the seal.

HTH
Ctefeh

PS. I see you're in Sydney. Bajachris88 (QLD) was offloading his semi-auto stuff a while back.

[ Edited on 27/8/2007 by ctefeh ]

[ Edited on 27/8/2007 by ctefeh ]

[ Edited on 27/8/2007 by ctefeh ]

bullyboy Casual Dubber

24 posts · joined Sep 2002 · 28 Aug 2007, 9:14 am

#608880

Thanks all. It was looking all too easy...now it's looking a bit too hard. I think I'll chase down a semi-auto engine.

Thanks for your help.
bullyboy

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 28 Aug 2007, 9:20 am

#608882

Hi

I use a piece of steel bar welded to an old pulley to undo the flywheel on auto bugs. Some 1600 used the 3 bolt cam and if it has an after market cam it will be 3 bolt.

Steve