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Sat Jan 07, 2006 10:25 am

have a 51 and the original manifold is leaking between the thin pipe and the larger one,i have a nos 30hp manifold which looks the same,it has the small aluminium section just like mine on the 25hp,are they the same can anyone advice on this,as im going to change this tommorow,thanks steve

Sat Jan 07, 2006 10:45 am

i'd suggest having a reputable restorer fix your original manifold. ZARWERKS is great at those repairs. original is always better. :D

Sat Jan 07, 2006 11:17 am

i agree,but if the nos 30hp is the same as my 51 then that will do untill i can get my original fixed,steve.

Sat Jan 07, 2006 12:03 pm

No it is't the same. I think your car should have a K manifold, not something that looks like a 1192cc manifold. However, if your really not concerned about stock appearence, the 1192cc manifold will fit. I ruin one on my 25hp motor.

Indeed though, if you want an original, or if you have an original you need fixed—Zarwerks.

Sat Jan 07, 2006 12:30 pm

so what is a k manifold,as to the untrained eye they do look the same,steve.

Sat Jan 07, 2006 12:50 pm

wolfsburgvw wrote: so what is a k manifold,as to the untrained eye they do look the same,steve.

Its the one on the bottom.

Then there is the jacketed k manfold which is actually for 51-52, MUCH rarer.

This one is mine.

Sat Jan 07, 2006 12:53 pm

If you're looking straight down on it, it resembles a K. Both heatrisers are straight until they bend down to the exhaust manifold. 30s curve a little and are shorter.
Also, 30s have larger intakes at the head. They will have to be machined down to fit 25 horse heads.
John Henry will probably send you a picture of the K manifold.

Dave

Sat Jan 07, 2006 1:48 pm

The pics above show the K, the jacketed and unjacketed. The jacketed K manifold has no VW part number on the jacket.

I can replace the heat riser legs on the jacketed Ks. Pics of that operation at zarwerks.com

Sat Jan 07, 2006 4:02 pm

the manifold i have is like the top one with the aluminium more to one side,what would this be for then,,as my car is a 1 owner with 45000klms.is it the correct manifold for a 51,steve.

Sat Jan 07, 2006 4:55 pm

wolfsburgvw wrote: the manifold i have is like the top one with the aluminium more to one side,what would this be for then,,as my car is a 1 owner with 45000klms.is it the correct manifold for a 51,steve.

No it is not correct. It is a later manifold.

Most K manifolds were replaced because they did not function very well.

Sat Jan 07, 2006 5:27 pm

wolfsburgvw: Does that manifold have a part number on it ending with "701E"? Probably does.

Jacketed Ks have symmetrical aluminum jackets.

JH

Sat Jan 07, 2006 9:36 pm

If you are going to use your 36hp manifold on your 25hp motor you would need to mill down the end castings. It will not fit on a 25hp head as is. You'll have a really big leak :shock: Also replace the crush gaskets.

Zarwerks can help you with the necessary machining if needed.

"701" is the replacement 25hp manifold (no milling needed). "701E" is 36hp (needs milling to fit 25hp)

Jim

Sun Jan 08, 2006 6:11 am

thanks for all the valuble advice,does anyone have the correct manifold for my car then,if so i would like to try to put it back to how it should be,i think i would prefare the jacketed manifold,im looking to get this sorted very soon,so any help apreciated,regards steve.

Sun Jan 08, 2006 7:36 am

Steve,

I sold a jacketed 'K' two weeks before Xmas to a guy in Japan :(
They're pretty hard to come by and almost impossible to find in good condition. I know John and Jim have restored quite a number of these in the past and occasionally have one for sale.

Best of luck!
Rich.

Sun Jan 08, 2006 7:41 am

hi rick happy new year to you,thanks for that,but domyou know if my 51 should definetly have the jacketedk manifold,as ive been on the brezelworks site and it says thay were used on 1950 and earlier,have you any idea,my manifold has the part no 111 129 701E. Has my car got the wrong or correct manifold,steve.

Sun Jan 08, 2006 8:22 am

wolfsburgvw wrote: hi rick happy new year to you,thanks for that,but domyou know if my 51 should definetly have the jacketedk manifold,as ive been on the brezelworks site and it says thay were used on 1950 and earlier,have you any idea,my manifold has the part no 111 129 701E. Has my car got the wrong or correct manifold,steve.

DUDE. ITS NOT CORRECT. YOU NEED A DIFFERENT MANIFOLD IF YOU WANT TO BE 100% CORRECT.

THe non-jacketed manifold was used on 50 and earlier, the jacketed manifold was used for most of 52 and 51.

If you want one, GOOD LUCK. A jacketed K manifold will run you over $500, IF you can find one.

Sun Jan 08, 2006 9:06 am

ok thanks,looks like i need a jacketed k manifold,has anyone tried the repro ones from brezelworks,this looks like my best option it thay are as good as thay seem,steve.

Sun Jan 08, 2006 10:12 am

wolfsburgvw wrote: ok thanks,looks like i need a jacketed k manifold,has anyone tried the repro ones from brezelworks,this looks like my best option it thay are as good as thay seem,steve.

I think you mean zarwerks, not brezelwerks.

Sun Jan 08, 2006 10:27 am

your correct thanks for that,steve :D

Sun Jan 08, 2006 11:44 am

Quote: The non-jacketed manifold was used on 50 and earlier, the jacketed manifold was used for most of 52 and 51.

Actually the JK started in April '50, so very early '50s would have the non jacketed K manifold, but later 50s would have the jacketed version (April 3, in Progressive Refinements) . It is also unclear as to exactly when they ended, but it was before the end of Sept '51.