924Board.org

Octane · Posted: Thu Jul 01, 2010 9:14 pm Post subject: BIG THANKS TO DAVE (DOCO)

As many of you saw in my other thread I was having some trouble getting my '77 924 to start after pulling the engine and converting to carbs. Thankfully Dave was able to make the trek to come out and help me out and get it running within minutes, turns out I had the distributor in the wrong position altogether. Nonetheless, we got it running and it runs really well. Going to be pretty strong on the road nonetheless, I was regretting ditching CIS throughout most of this process but not after hearing it run with carbs. We'll see if that changes once I start driving it and using way more fuel

Here's a video for you guys:
http://www.youtube.com/watch?v=3zE1f4XqJIM

Making a throttle setup for it today and installing the seat then I'm going to drive it hopefully.

Thanks again Dave!
_________________
- Brendan
1977 Porsche 924

RC · Joined: 25 Mar 2007 Posts: 2637 Location: Australia

Onya DOCO!

Another happy 924 owner.

Got a couple of guys here, one in Brisbane and another in WA who I`m sure will chip in for petrol if you want to do a real road trip.

Rich H · Posted: Fri Jul 02, 2010 3:21 am Post subject:

Nice one guys
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1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

DOCO · Posted: Fri Jul 02, 2010 3:39 am Post subject:

you guys get me boat fair and aplace to transport my 24 and ill be over there asap .ill quit my job and ill move down !!!!nea fear!!!HELLO Australia
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Doco "where am i going and why am i in this handbasket"author unknown
79 924 N/A "Webster"
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\0 924 0/
[__]..[__]
"WEBB STR"

DOCO · Posted: Fri Jul 02, 2010 3:42 am Post subject:

hey brendan no problem mon ami!!(my friend)need ant other help just give a call!!!Dave (Doc O)thats how its prononced or LOCO as other has called me!!!
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Doco "where am i going and why am i in this handbasket"author unknown
79 924 N/A "Webster"
_______
/______\
[+]___[+]
\0 924 0/
[__]..[__]
"WEBB STR"

the_mad_electrician · Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia

nice job on the carbs! it seems to be running better than mine, but my starter died before I could the webers tuned(which I'm still not 100% on how to do)
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81 924 N/A

2004 Ranger "Edge"

2005 Mazda 6

Joes924Racer · Posted: Fri Jul 02, 2010 3:27 pm Post subject:

Fantastic..
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Octane · Posted: Fri Jul 02, 2010 11:15 pm Post subject:

Well I got this thing on the road yesterday, half-assed the throttle linkage and installed the driver's seat with one bolt because I just wanted to drive it!

I had to advance the timing a little bit more, was running rough and vibrating like crazy at idle. Now it's generally a little sluggish off idle but runs strong through first, second and third gear. In fourth it has a hard time getting over 4,000 rpm or so (60 mph). Fifth feels pretty much normal although I haven't wound it up that high, I'd imagine it has similar problems as fourth. Is this indicative of timing still? Which way do I need to go with it?
_________________
- Brendan
1977 Porsche 924

DOCO · Posted: Sat Jul 03, 2010 12:05 am Post subject:

hi this could be caused by carb.mixture adjustment.there is a flow meter that can be bought that will help with the adjustment and syncronise the carbs.it not a big price,and i need one too!also remember that you have no vacuum advance.try the vacuum port i showed you.you will need to get timing light. when you hook manifold vacuum it will advance timing too much and you will have to retard it.not sure if your carbs have a ported vacuum?that would be ideal if it does.did i give applebits web page.im sure he talks about this on there.ill find the link
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Doco "where am i going and why am i in this handbasket"author unknown
79 924 N/A "Webster"
_______
/______\
[+]___[+]
\0 924 0/
[__]..[__]
"WEBB STR"

931Owner · Joined: 14 Feb 2009 Posts: 352 Location: Chicago NW Suburbs

Great job DOCO!

Octane... have you synced the carbs, i.e. making sure the air fuel mix is the same on both? Also, check your plugs after a good run and make sure you still have good burn and not running too rich (black or sooty) or too lean (white). You may need to re-jet or adjust the jets on them as well.

If your carb has floats, they also need to be adjusted at the right level per the manual. I'm not used to solex carbs but I'm sure they're no different than having to set up quad carbs on a motor bike, twin carbs on a Rover 2200 TC or triple carbs on an old Jag. They'll need to be synchronized and jets adjusted accordingly.

Edit - Hey DOCO you managed to get your reply in right before me!
_________________
1980 Turbo
-too many cars and too many motobikes

DOCO · Posted: Sat Jul 03, 2010 1:22 am Post subject:

LOL well i feel really compelled to work all the bugs outa this one!!even if it means more "short"road trips LOL.but he did good work on his car.smart lad!!and i wanna drive it!!!LOL

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Doco "where am i going and why am i in this handbasket"author unknown
79 924 N/A "Webster"
_______
/______\
[+]___[+]
\0 924 0/
[__]..[__]
"WEBB STR"

Octane · Posted: Sat Jul 03, 2010 2:06 am Post subject:

Haha thanks guys. I think it'd be best if I brought it to someone who does lots of old VW's etc. to set up the carbs. I did buy a timing light so I can start playing around with that also. Basically I marked the distributor where Dave had it and I've been road testing, driving around with a wrench and adjusting it periodically. My best results have been with slightly more advance. Got rid of the 4th gear hesitation today and it overall runs better, fresh fuel helped too. Still idles way too high (1800rpm or more) and it's not the idle screw or throttle cable causing it so I need to get that checked out. I'll pull a spark plug once it's cooled down and see how it's burning. Thanks.
_________________
- Brendan
1977 Porsche 924

Slam · Posted: Sat Jul 03, 2010 6:16 am Post subject:

I love posts like these. Way to go, guys!

I think you're on the right track timing the distributor by feel. Someone correct me if I'm wrong, but the North American cars only have timing marks for North American specs. My Euro has timing marks at +10BTC and -10ATDC and the Canadian cars don't have their flywheel marks in the same place. What's worked for me is holding the throttle open to about 2000 RPM and then tweaking the distributor onto the sweet spot. Of course, mixture has to be right.
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'84 944 - kid blew motor
'83 944 - resting comfortably. For 12 years
'87 944 - sideswiped by trucker
'80 924 - gone
'78 924 - gone
'77 924 - rusting comfortably