TheSamba.com :: View topic - My 67

Fri Apr 25, 2008 8:59 am

Okay - I just returned from my Highway drive...
Drove 2 miles to get out of town then 60-65 mph for 20 miles total...
Never drove it that fast before so i put the windows down for the first 10 miles and up for the 2nd 10 miles...Other than the obvious boom from no popouts...it runs very smooth and quiet...especially with the windows up...

i put the meat thermometer in seconds after getting back...looks ok

Pulled the plugs immediately and they look the same (notice better quality pic :D )

I was going to adjust valves in the morning...maybe i should check timing and compression??? or is this the wrong direction? I've read numerous threads on doing the above procedures so I think I've got it down...I do need to go buy a timing light however...

Fri Apr 25, 2008 9:03 am

Try that routine again, but with fresh plugs. See if they soot up again

Fri Apr 25, 2008 12:02 pm

I'm game for that...I've got a whole pile of new W8AC plugs... :)
As an extra note on the frayed fan belt:
I think it ended up being the timing notch in the crank pulley that had a bit too much burr....I smoothed it with a small file and no fraying after my 22 mile test drive...

Fri Apr 25, 2008 7:09 pm

If those are the plugs after a 20 mile highway run, then you may need to drop down 1 size in the jets.
Is there any possiblity that your carb is jetted for a bus??

Fri Apr 25, 2008 7:28 pm

Russ Wolfe wrote: If those are the plugs after a 20 mile highway run, then you may need to drop down 1 size in the jets.
Is there any possiblity that your carb is jetted for a bus??

I dont know...Let me see if I can figure out where it is on a 30/31pict and i'll go look....

Fri Apr 25, 2008 7:32 pm

The main jet is located behind the plug on the fuel bowl. The air correction jet is in the center of the carb, under the top half of the carb. The idle and pilot jets are on the outside of the carb on the right side.

Fri Apr 25, 2008 7:35 pm

Woreign wrote: The main jet is located behind the plug on the fuel bowl. You'll need to remove the carb from the engine to see it...

okay - maybe i wont run out and look tonight....tomorrow sounds better

Fri Apr 25, 2008 7:39 pm

Is the main jet behind this slotted screw?
I'd jump right in and look if it were daylight but thought i'd just ask for now... :)

Fri Apr 25, 2008 8:42 pm

Russ Wolfe wrote:
Is there any possiblity that your carb is jetted for a bus??

Not sure how buses are jetted but I figured out how to get mine out and its a 120...

Sat Apr 26, 2008 2:15 am

As you have found, the size should be stamped on the face of the jet but unless you measure it (or compare it to a known jet) there's no telling if someone has already drilled it out.

Sat Apr 26, 2008 7:45 am

Okay - that makes sense...I'll put it back and press on for now...

Sat Apr 26, 2008 1:36 pm

Okay - I just went on my second 22 mile "blow out" trip....I'll spare you the pics as the 22mile spark plugs look the same as the plugs i had in before...identically the same...

The car drove absolutely awesome - peppy, strong, no smoke, Temp is exactly the same as yesterdays...around 209ish...

I adjusted the valves this morning and checked the timing...

It smells like its running rich so I guess I should look into that next....? I'll search and see what I can find on how to adjust the richness...

Sat Apr 26, 2008 3:30 pm

I posted jet sizes in another thread the other day for the buses.

Sun Apr 27, 2008 7:54 am

I bet that H30/31 has a 127 main jet in it. I would go down to a 120 or 117.5 main and see what that does. My original German Solex PICT 30-1 has 116 main, 55 idle and 125 air correction. This is in my bone stock 67 bug with a fresh 1600 single port engine. The plugs look perfect and it passed the AZ emission test with flying colors jetted that way.

Sun Apr 27, 2008 8:30 am

Can someone identity what #1 and #2 are in this picture? Just want to know whats what....

When I pulled out the jet (stamped 120) it didnt look like someone enlarged it but that may be a very naive statement... :) I guess to be on the safe side i should buy a 120? Seems/smells to be really rich - Is there another adjustment for richness other than changing the main jet??? Im still looking through threads...so bear with me...

Sun Apr 27, 2008 9:38 pm

http://www.vw-resource.com/carb.html#brosol

This will explain it all to you. Excellent site with good info.

Mon Apr 28, 2008 6:48 am

Rob and Dave's site is great. Should be a lot of help. Also check the "sticky" above concerning the EMPI 30-1 Carb as compared to original German Solex an Bocar carbs if you ever opt to replace your 30-31 with what would have been an original carb for your '67 1500.

Tue Apr 29, 2008 6:30 pm

Thanks for the links...I'm going to spend the day tomorrow making sure i did the valve adjust correctly, then timing, and carb adjust...I bought a new 120 jet so I know its a 120 undrilled...Hopefully I can fix the rich condition...

Can I remove the fan shroud without pulling the engine? I want to put the thermostat and flaps that were removed back in...

-jim

Tue Apr 29, 2008 6:41 pm

Yes, you can pull the fan and shroud without pulling the engine....but I wouldn't recommend it.

It's much easier to pull the engine out first to do the shroud work. It may seem hard to believe if you've never done it, but the engine comes out so easily that it doesn't make sense to me not to pull it for the work you want to do.

Tue Apr 29, 2008 7:00 pm

I think I will pull it out - In a month it'll be getting really warm here so I won't be driving it as much...It'll be a good summer project...