2TG Distibutor problem

[rmwood7]

Hi
I am a new member
We have aquired a ta22 with the 2tg motor.
The distributor has had its advance/retard removed and blocked off with silicone.
It runs but coughs and splutters when revved.
I have checked the points,coil etc, it's fitted with twin 40 webers but they are correctly jetted.
1 why would anyone do that?
2 Am I right thinking this would cause the problem?
3 Where on earth can I get another Distributor?
Photos attached

https://picasaweb.google.com/1177147...20106602125378
Many Thanks
Richard

["Z" UTE]

Mate, find a dizzy and coil from a 21R/22R engine, swap the guts over and enjoy pointless motoring. Use the vacuum advance from the later engine as well. There will be a thread somewhere here on Toymods on how to do the swap. Basically you remove the rotor button, and undo the screw in the guts of the shaft to separate the shaft, the plate removal is straight forward spanner work.

cheers Chuck.

[lt1972]

I have a complete 2t points dizzy working order, all yours $40 plus post.

[71TA22]

I run my 3TG hybrid with vacuum advance removed from the distributor. Also running Weber 45's.

No issues with poor running.

Is the static timing ok - about 5 degrees for 2TG, 12 for 2TGEU. If you have higher duration cams than factory static timing needs increasing.

Are the carbs properly balanced?

Is the distributor shaft worn, governer weights move freely, governer spring(s) ok. Are the weights/springs standard or has distributor been re-curved?.

Vacuum advance is basically used to improve low to mid range running and fuel economy.

[rmwood7]

Hi
First thanks for everyones help.
The static is 10 decrees , the carbs are balanced.
Now there seems to be no movement in the distributor, as though its fixed, the guy has filled the hole with silicone, whether any has got into the distributor, I don't know.
The reason I think this is the problem is because it coughs and splutters in the low to mid range revs.
If you leave it idling, its runs like a sewing machine, blip the throttle and it backfires.
Tell me why did you remove the vacuum advance?
Cheers

[71TA22]

Vacuum advance only really works at idle and cruising speeds. Soon as you open the throttle there is little or no manifold vacuum. I dont do much town driving and spend most of my driving time on the twisty stuff.

Cams are 292 duration, static timing is 16 degrees. Dizzy has changed governer springs to get to max advance quicker to suit cam profile.

If you have silicon interfering with the governer springs/weights you will have issues.

Are your plug leads on in the correct firing order? I had the same issues you are reporting once with the plug leads out by 180 degrees.

[rmwood7]

First thing I thought off, plug leads, there is no silicon in the distributor, it's just blocked the hole where the vacuum advance was.
Maybe it's time it went to the tune up shop.

[rmwood7]

We have a vacuum leak, I started it cold and sprayed carby cleaner around the mainfold, it nearly died when I sprayed it underneath the manifold, so new manifold ordered and fingers crossed.
Thanks for everyones help.

[lt1972]

Thought it could also be that. Hence asking if the vac hose meant for dizzy was blocked off. Pull the manifold off it might only be a stuffed gasket or one of the manifold plugs at the bottom loose doubt there would be a crack. I would still sort out dizzy though.

[71TA22]

We have a vacuum leak, I started it cold and sprayed carby cleaner around the mainfold, it nearly died when I sprayed it underneath the manifold, so new manifold ordered and fingers crossed.
Thanks for everyones help.

Is it a new manifold or just the gasket you need? Hope this does the trick.

[rmwood7]

Well we blocked off all vacuum leaks and its a bit better,coughs and splutters when cold, it runs brilliantly when warm.
We have ordered new Spark plug leads, I still think it's the dizzy .
Are 2TC / 3TC Distributors the same???
Or maybe this is the best we can expect?

[71TA22]

2tc/3tc distributors are similar. If you get a short shaft version you wont be able to static time the engine without grinding the intake manifold to get clearance for the distributor body.

[rmwood7]

I finally got to talk to the guy who worked on the motor , it has longer duration cams and the dizzy has different springs, so there would be little vacuum , so thats why he took it off.
It definatly runs better without the vacuum leaks.
I am advised to buy the Pertronix Ignitor ignition from the states by a toyota mechanic, so I guess thats next.