Problem of the day. Post it up!

[Clonebug]

Where will I find room to run my oil lines to the filter????

[1938vw]

now on to my big fail.......
after i had run the engine a few times on the floor, i was tidying my stuff in the garage i noticed oil at the back of the engine, i instantly knew what was wrong...... i forgot to put the rear crankshaft seal in!! oil everywhere. so now i need to remove then flywheel re-torque it!

[56speedster]

Good thing you ran it before you installed it in the car.

[Chip Birks]

Where will I find room to run my oil lines to the filter????

Shoot, thats more room than I've got! I have my turbo mounted right next to the full flow setup, and I can't just go towards the front of the car to go around the turbo, cuz my collector is right there. Lots of head scratching with the setup so far

[JASON7274]

can you raise deck height with head shims enough to change comp ratio
without compromising performance or removing cyldrs?

[JASON7274]

make sure you put some kinda heat shield around oil lines near exhaust thin metal @ depot

[vwfye]

My problem? Runs and idles fine... builds 1 psi of boost max. DOH!!! Apparently I have a major leak somewhere. Can't hear it of see it yet. Fun... NOT

[Corysvdub]

My problem? Runs and idles fine... builds 1 psi of boost max. DOH!!! Apparently I have a major leak somewhere. Can't hear it of see it yet. Fun... NOT

What size motor and Turbo?

[vwfye]

2110 w/ a T3. we think we found the problem(s), I should know Saturday afternoon.

[Clonebug]

I have come upon a problem.

I have been working on my new engine tune and for the life of me can not figure out what the problem is on my carb. Not only is it the Bocar 34 Pict-3 giving me the problem but it is also the modified Solex 34 Pict-3 doing the same thing.

With the old engine I ran a 55 idle jet consistently and could tune the AFR with the volume control screw right at about 2 turns out and get the engine to miss at 13.4 to 1 afr and idle beautifully at 12.7 to 1 afr.
Once the afr was set I could adjust the idle speed to whatever I wanted with the Bypass screw. The last thing I had done when I had found the old engine had a cracked case was to add a short piece of hose to the fuel bowl vent and it gave me a rich afr whereas before I was always lean on boost.
That gave me enough power to blow the intake boots on the endpieces.
Fast forward to the new engine.

Set the same exact carb on the engine and it is pig rich with no response on the screws.
Dropped the idle jet from a 0.55 idle in 0.05 increments all the way down to a 0.35 with no idle afr changes. The volume control screw has to be completely closed to get the engine to even run at a 10.5-11.0 to 1 afr. Basically there is no response on the adjustment. Bypass will stall the engine if I screw it in due to the engine being pig rich.
Solex carb does the same thing.

Removed the hose off the vent and it still does the same thing.
I have had the main jet all the way down to a 1.35 mm jet which is basically a stock jet... still rich but will show a little lean at boost. Never really can test when the idle is so rich. I can't get it cleared out well enough to run it hard.

I looked in the top of the carb while it is running and there is no drip out of the vent or out of the main or out of the accel pump.

Where in the world can the fuel come from on one of these carbs if it isn't coming through the idle jet???

Float setting is a .032 washer and the fuel level is where it has always been when it ran nicely.
New carb to manifold gasket.
fairly new carb top gasket.
new orings on the adjust screws
new float
fast idle screw adjusted to specs.
fuel pressure is 4 lbs. last I checked and I will confirm tomorrow that it is still ok.
But like I said... if the fuel bowl was the problem it would be flooding out the vent which it is not.

All gaskets on the engine are new. intake boots are now 5 ply silicon boots so there should be no vacuum leaks anywhere.

Whoever comes up with the winning answer for me will get bottle of my famous Hootch (of which you can pick one of 5 flavors) sent to your front door.
Mario, TurboBaja and Sparkmaster can speak for the quality of the 'stuff'

This has been soooo frustrating when I have this engine just dying for boost.
If I was working steady I would just swap over to Fuel injection since the time and money I have spent on this is not worth it anymore. I am so close yet so far.

[turbobaja]

Not only is it the Bocar 34 Pict-3 giving me the problem but it is also the modified Solex 34 Pict-3 doing the same thing.

...fuel pressure is 4 lbs. last I checked and I will confirm tomorrow that it is still ok.

If both carbs are causing you difficulty with idle mixture adjustment, it would make sense that something other than the carbs is the root cause. Have you checked/adjusted fuel pressure on the new case yet? New spark plugs? Good fuel? Have you got the base setting correct for the mechanical throttle stop so the butterfly sits below the progression ports @ idle...on both carbs? Are you running with the choke mechanism on these carbs?


I recently participated in a 24hr snowboarding event at Steven's Pass called Hope on the Slopes, all about fighting cancer. I carried my flask with the 'stuff' you sent me and it helped me ride through the pouring rain and wind... .

[Clonebug]

Not only is it the Bocar 34 Pict-3 giving me the problem but it is also the modified Solex 34 Pict-3 doing the same thing.

...fuel pressure is 4 lbs. last I checked and I will confirm tomorrow that it is still ok.

If both carbs are causing you difficulty with idle mixture adjustment, it would make sense that something other than the carbs is the root cause. Have you checked/adjusted fuel pressure on the new case yet? New spark plugs? Good fuel? Have you got the base setting correct for the mechanical throttle stop so the butterfly sits below the progression ports @ idle...on both carbs? Are you running with the choke mechanism on these carbs?

Carb has been set on the throttle and then reset again. 0.002 feeler gauge instead of a 0.003 since I don't have a 0.003. I set it loose and then gave it a half turn like every solex adjustment site says.
Set the two adjustment screws out at 2-2 1/2 turns out and it runs like crap. Turn the volume screw all the way in and it runs best with it completely closed if you can believe that.
It is getting fuel from somewhere else and I can't for the life of me figure out where it could come from if the float bowl isn't dumping fuel or the main isn't giving it.
It has to be something simple.....I have been looking at the flow diagrams but all fuel has to travel through the main first and then through the idle circuit to get fuel.
I think I'll try to solder an idle jet closed and see if it will run like that.
I have to get a new brass tee to double check my base fuel pressure so that is the first thing I will do when I work on it.

I recently participated in a 24hr snowboarding event at Steven's Pass called Hope on the Slopes, all about fighting cancer. I carried my flask with the 'stuff' you sent me and it helped me ride through the pouring rain and wind... .

I have some more interesting flavors now........One is an 'orange with extra pepper' that would heat you up nicely...
Has a nice little burn on the back of the throat going down.....needs to be sipped while on ice.....

[sparkmaster1]

Watch out for the hooch, it sneaks up on you ..

[Zander]

Have you checked for a vacuum leak where the end castings meet the heads? If both carbs do the same thing it's got to be fuel pressure or vaccum leak. At least that's what I'd guess.

Just hopin for hooch here!

[seabeebuggy]

Yah sounds like fuel pressure to me