carb gasket questions

schmooot · Post by **schmooot** » Tue Mar 11, 2008 5:09 pm

SO I just finished rebuilding my carb and I'm ready to install it on the car. Now the rebuild kit has 6 gaskets left.

There are 2 of each of these (extras? or do I double up?)....the one on the right I believe goes directly underneath the carb. The other two I am not sure...the one on the left has a nice swirly that lines up nicely with the pcv riser plate as well. ( I do realize some of these may not be needed as the kit was for a few different carbs

I also bought a carb gasket set (upper and lower) as I wasn't sure if the rebuild kit would have them....they both came together in a box so I don't know which is which either.

The one on the left is much thicker and I believe it goes between the manifold and the heat insulator.

So can someone tell me which ones go where
from the top down

1. carburetor
2. ??? gasket on right from first picture ???
3. PCV riser plate
4. ??? gasket ???
5. heat insulator
6. ??? gasket on left from second picture ???
7. manifold

Here is the underside of my carb

And I can't just look at the vehicle because it is very old and has been apart in that general area more times then I can remember so if there are gaskets there they probably aren't the right ones......and I think I saw some silicone under the heat insulator last time I peeked under there

Post by **ARCHINSTL** » Tue Mar 11, 2008 6:22 pm

I went through this angst last year - check out this link:
https://tercel4wd.com/forums/viewtopic.php?t=28 ... ht=gaskets.
The correct one immediately next to the carb is the left one in your bottom pix.
The link has pix and interesting comments.
I regret I do not recall the positioning of the other gaskets (I took pix at the time to aid my memory), but I believe the one at the right of your final pix went for the other positions - I may have used a razor blade to modify some of the others to to correspond to the bottom right one in your pix to save buying more.
I'm certain others can comment on this.
Tom M.

schmooot · Post by **schmooot** » Wed Mar 12, 2008 9:37 am

well that link just made me more confused

schmooot · Post by **schmooot** » Wed Mar 12, 2008 9:54 am

you are saying the big fat one on the left in the bottom pic goes directly under the carb? but its so thick

schmooot · Post by **schmooot** » Wed Mar 12, 2008 10:10 am

FELPRO lists this one as the "upper" on their website

and this one as "lower"

therefore the "upper and lower kit" that I bought has the two gaskets on either side of the pcv riser. This leaves the one between the heat transfer plate and the manifold.

UNLESS the term "lower" implies between the heat transfer plate and the manifold.....in that case I still need the one for between the pcv riser and the heat transfer plate.

Dammit

Post by **ARCHINSTL** » Wed Mar 12, 2008 12:49 pm

#4 in my pix in the link (and the one shown in keith's pix thereon) and the top one in your last pix is the one to go immediately under the carb. This is the middle one in your very first photo.
As I recall..... - the other ones are like the lower one in your last pix.

As stated in the link, I looked over a bunch of carbs on eBay, and keith confirmed it with a pix of his. Unless you surgically cleaned the heat protection plate and the PCV plate, there should be the "witness" marks Typrus mentions - which is what I found - and then I altered one of the "extra" gaskets to avoid buying a whole new kit. It's been working just fine, with no leaks anywhere. I did use a light coating of red Permatex gasket cement as a precaution.
Tom M.

schmooot · Post by **schmooot** » Wed Mar 12, 2008 5:03 pm

I see that now

here is how I am going to do it

splatterdog · Post by **splatterdog** » Wed Mar 12, 2008 5:46 pm

There's no air/fuel heater in your spacer!

I would say the gasket with the matching passage goes on top of the plastic spacer. Not sure what it feeds manifold vacuum to, but it will be blocked as pictured.

Post by **ARCHINSTL** » Wed Mar 12, 2008 6:27 pm

To paraphrase Professor Higgins, "By Jove, I think he's got it!"

Apparently some of the Canadian-spec cars did not have the electrical mixture heater.
My '86 FSM shows it for the Canadian Wagon A/T, but not the Wagon M/T.
Hmmm - it does get cold in Canada, right?
Maybe schmoot's Wagon is spec'd for the well-known Canadian Tropical-Vacation Coast?

Tom M.

schmooot · Post by **schmooot** » Wed Mar 12, 2008 7:29 pm

sorry guys I guess I should have clarified.

This is a canadian vehicle and the motor is from a 3A-C m/t wagon....although the car is not....its an 86, 4 door hatch 'gasp' but it is a m/t. I know I still haven't found a 4wd wagon that I want to keep just yet....I'm hopin to pick one up for next winter. That still shouldn't change a thing

schmooot · Post by **schmooot** » Wed Mar 12, 2008 7:35 pm

splatterdog wrote:There's no air/fuel heater in your spacer!

I would say the gasket with the matching passage goes on top of the plastic spacer. Not sure what it feeds manifold vacuum to, but it will be blocked as pictured.

it does appear to block the passage but it doesn't actually block it off

schmooot · Post by **schmooot** » Thu Mar 13, 2008 11:20 am

well it started fine after sitting in the shop all day yesterday, I set the idle then drove around a lot, then went home and parked it for the night. This morning I had a helluva lot of trouble...first it flooded then wouldn't fire at all, then I finally got it running (barely by holding the choke flap closed) but I couldn't touch the gas pedal or it would die....eventually it wamed up enough to run just fine....It just needs some tweaking methinks but when it warms up it does run quite fine....meaning my rebuild was potentially a success

schmooot · Post by **schmooot** » Thu Mar 13, 2008 1:36 pm

victory is mine!!

I had the choke cover on wrong and it wasn't contacting the spring....and the linkage was binding a bit because of a kinked accelerator cable. Now it runs better than it ever has