Crab 42-48 vacuum seal

[RalphM]

Originally Posted by BUBBAS IGNITION

Just mailed the first 6 letters with seals, let me know when ya get them....got plenty for any that wants them.....

I think I see mine in the pile

[Ian NZ]

Originally Posted by Graeme / New Zealand

Bubba why were some alloy and others steel for the crab? Seem to be more steel ones down here in NZ. I have both. I got the ali one from a part supplier in the US way back

GB

Aluminium crab distributors are very rare here in N.Z. cast iron ones with a bronze bush for vacuum advance piston which are the best for the least amount of wear, are the best type I have worked on are and very common here.

[46Fordor]

Originally Posted by BUBBAS IGNITION

Deal of the day !!! Someone had a post the other day regarding the vacuum seal on the 42-48 crab distributor.
I didnt have the time to look but knew we had some somewhere and i found them.!!
Getting the old seal out is the biggest problem, you can leave the old rivit in if ya want or take it out when you remove the seal..
I will send you two new seals at no charge if you will send me a self addressed envelope with postage on it Thats as good as it gets .

Need more send more envelopes ?????? My friday special just for the barners !!!!

Hi Bubba, most informative, any chance of getting a part number and size of this O Ring please, great posts you put up, thanks

[BUBBAS IGNITION]

Originally Posted by 46Fordor

Hi Bubba, most informative, any chance of getting a part number and size of this O Ring please, great posts you put up, thanks

The o-ring i use is square cut and is a left over from my fuel injection business , its a toyota injection seal . send me a envelope and i will send ya some ......

[Charlie ny]

Jim,

Happy to see you are still at it, you are mister double D.......
distributors and dialysis..........keep keepin' on.
Charlie ny

[46Fordor]

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Thank you Bubba, I appreciate your generosity and the knowledge you pass on in this and other forums. Wish you a speedy recovery.

[46Fordor]

Following the comments of cast iron crab housings in this thread, I have one with a lug on either side, perhaps someone can identify it and the model it was used on, maybe industrial??? here are some images;
[ATTACH][ATTACH]IMG_3957.jpg

IMG_3958 2.jpg

IMG_3959 3.jpg[/ATTACH][/ATTACH]

[swanwaco32]

I used a easyout to get the rivet out. Is it normal to not be able to the piston to move with a hand vacuum pump? Seems like the piston for the brake should have a tighter seal in the bore? Thanks John

[BUBBAS IGNITION]

Originally Posted by swanwaco32

I used a easyout to get the rivet out. Is it normal to not be able to the piston to move with a hand vacuum pump? Seems like the piston for the brake should have a tighter seal in the bore? Thanks John

A hand vac pump would be tough based on pure volume we use a test benchg with vac pump .........the actuall seal never needed to be very good as the engine has good volume for the little piston size .......

[swanwaco32]

Thanks Bubba..!!