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Carb Rebuild Options


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jimbear

Mon Feb 07 2011, 07:37PM

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I want to rebuild my Solex carbs. However, I want it done right and worry that I will not do it right. I know of a guy in GA who will rebuild both for around $237 with shipping. Is that a fair price? Am I a wimp for not trying? !mistrust

[ Edited Mon Feb 07 2011, 07:38PM ]

STOP FRACKING STOP FRACKING STOP FRACKING
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The faster we go the rounder we get...
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zoo

Mon Feb 07 2011, 09:43PM

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Will never know if you don"t try.... go for it

Tue Feb 08 2011, 12:14AM

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Might I mildly admonish you for not using the tech questions forum, especially since you're a pretty big dude, but, having said that...
Rebuilding a carb is not rocket surgery, it's mostly cleaning. If the carbs have a flat sealing surface, you lap the surfaces with a piece of plate glass and 220 aluminum oxide paper glued to it. If it has a little raised bead that runs around the surface, cleaning will suffice. Unsweetened Kool-aid mixed triple strength is an excellent cleaning agent once the petroleum products have been removed.
Blow out the passages in the carb the opposite way either gas or air travels thru them, replace the gaskets and brass parts that are supplied with the rebuild kit, and set your float bowl level according to instructions. Adjust your idle jets and throttle stop. That's about it.

jt
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1977_L63H_P27

Tue Feb 08 2011, 06:23AM

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jt wrote ...

Might I mildly admonish you for not using the tech questions forum, especially since you're a pretty big dude, but, having said that...
Rebuilding a carb is not rocket surgery, it's mostly cleaning. If the carbs have a flat sealing surface, you lap the surfaces with a piece of plate glass and 220 aluminum oxide paper glued to it. If it has a little raised bead that runs around the surface, cleaning will suffice. Unsweetened Kool-aid mixed triple strength is an excellent cleaning agent once the petroleum products have been removed.
Blow out the passages in the carb the opposite way either gas or air travels thru them, replace the gaskets and brass parts that are supplied with the rebuild kit, and set your float bowl level according to instructions. Adjust your idle jets and throttle stop. That's about it.

Actually, when dealing with Solexes you almost always have to rebush the throttle shaft. Drilling the throttle body and finding the correct bushing should be left to the professionals. I do rebuild my own single carbs, but the side stresses that dual carb throttle shafts endure make them more prone to air leaks there.
To the OP, have you contacted this guy?
http://www.thesamba.com/vw/forum/profile.php?mode=viewprofile&u=27
He's in Houston, TX and supposed to be the best on PDSIT's. Good luck!

1977 Westfalia P27
1990 Passat 2.0L 16V

markdearing

Tue Feb 08 2011, 09:01AM

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First I wouldn't mess with the solexs unless you are a stock nazi,Probably the second worse VW carb system ever made, right behind the early rabbit solexes. For not too much more you can get a brand new set of dual carbs, webers or solexes . Heck I would run a progressive POC before those solexes later md

salem import service
1113 florida st
salem va 24153
540 389 8587

1977_L63H_P27

Tue Feb 08 2011, 10:27AM

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If you do decide to go new, this set still has chokes and the price is very reasonable.
http://www.cbperformance.com/catalog.asp?ProductID=1214
May have to jet 'em up a little, but probably not.
It's what I planned to get if the FI didn't work out. Peace!

1977 Westfalia P27
1990 Passat 2.0L 16V

jimbear

Tue Feb 08 2011, 08:48PM

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markdearing wrote ...

...Probably the second worse VW carb system ever made...

Just curious, why is that?

JT, I am a chicken sh%$ when it comes to the deep down technical stuff and I need my carbs to work when I get them in. I had heard about the issues with these Solex carbs and that spooked me more. I am also not up for trying to do the throttle bushing.

Wed Feb 09 2011, 07:37AM

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The pdsit dual is a weird set-up, and as Randy pointed out, is famous for throttle shaft wear, also, the idle circut is in only one carb, which is fed to the other side by the balance tube, which is supposed to eliminate syncing carbs, but from what I've heard doesn't even do that. For whatever reason I didn't realise you were talking about the pdsit's.

I second a recommendation at either getting a new or used set of Webers or baby Dells, most people prefer the Dell's.

markdearing

Wed Feb 09 2011, 07:39AM

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jimbear wrote ...

markdearing wrote ...

...Probably the second worse VW carb system ever made...

well Jim if you have already hear of their issues then you should know, but anyway other than throttle shafts, they are famous about sucking the down spout into the engine. had one do it pone day and pinch the top ring on a piston, then they were set up for an EGR recirulating system with a pump running off the crank pulley, most of these pumps locked up , even plugging them off doesn't work too well. then rubber elbows that would causer vacuum leaks, then the fact that the idle system for both carbs was only on the left carb. If VW hadn't tried to beat the pollution tests with that crappy egr system and had just used standard carb system , they would still only be OK. compaRED TO WEBER OR EVEN BETTER DELLS THEY ARE JUNK. LATER MD

salem import service
1113 florida st
salem va 24153
540 389 8587

Wed Feb 09 2011, 07:41AM

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http://www.thesamba.com/vw/classifieds/detail.php?id=1051541

Looks like a pretty good price.

PS, there are some t4 manifolds that only have three holes for Porsche heads, so make sure you get the ones for the VW heads.

[ Edited Wed Feb 09 2011, 07:45AM ]

markdearing

Wed Feb 09 2011, 10:49AM

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now that is a sety of real carbs with the good linkage, those other set of solexs have the POS linkage later md

salem import service
1113 florida st
salem va 24153
540 389 8587


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