Dodgeman

I know they are Hitachi SU's.
This you have mentioned to me a couple of times. Even in the mails I send you in the past asking for some advice.
I am just too lazy to type out HITACHI SU's.
It is quicker for me to type only SU.
If I mislead someone in this I am sorry.
About the A15 or A14 cylinder head story.
I think it was discussed before I joined this site.

Tommy.
Basically check everything that moves inside the carbs to see if they have grinding marks or a play on them.
Check how clean they are on the inside.
If they are clean, the guy probably used a aircleaner.Witch is good.
What I did in connection with the butterfly wear, I held the carb up into the sunlight with the butterfly in the closed possition.
There must not come any sunlight in around the edges of the butterflies and the bushes that opens and closes the butterfly.
This is where mine had wear that I bought as spares from someone.Small amount of sunlight was visible around the bushes.
This will cause them to idle too high as too much air and fuel will be coming in.

Dodgeman.
I leave the corrections to you if I made any mistakes on this.

confusing ... as some have fitted SUs to a 1200 using euro or custom manifold ... so be careful what you write. i would expect less takeoff power he only carb and manifold is changed. D-man, are not the 1000 dual setups round?

Quote:
The original post in this thread refered to the original GX carb setup, & i have stayed with that all along. I know that some people have installed SU's on their "A" series engines, but i am sticking with the Hitachi's in my posts.

Ddgonzal
There wasn't ever a factory twin Hitachi, or SU setup for the 1000 as far as i can tell. I lament greatly the fact that i passed up on a twin SU maniflod for the 1000, by Aussie maker "Lynx," at a swap meet about 20 years ago. They were asking $35, with a tatty pair of carbs.

These manifolds will also fit the later round port heads, but were actually made for the 1000 as they have no provision for a PCV valve, & the 1000 had a draught tube crankcase ventilation system.
Surely "someone" made a 1200 version

One of our members has one of these 1000 manifolds & it should make a 1000 engine run quite nicely with a well tuned pair of suitably small carbs.

Quote: The original GX carbs are Hitachi's, while the carbs that are the product of "Skinner Union" are SU's
Both of these two carbs are of the "variable venturi" type but there are no SU Hitachi's, & no Hitachi SU's just Hitachi, or SU carbs
The Hitachi carbs on the GX are, as i wrote, semi sidedraught, variable venturi types, & those on other 1200's are of the downdraught type.
Adding the letters "SU" when describing GX carbs just confuses the issue.

Whoh,

Seeing that theres so much to do and so little time, to pep up a bit of power to the Datto, without taking of the head, conversions etc, I think that I rather put up with sluggishness, and rather then put on a complete 2nd hand motor and g\box from a newer model a14 ute.

I'm sure this would be an easier option and cheaper as well.

Thanks alot guys, I'm glad that I didnt purchase these carbis and mainfold, without consulting with you all.
Cause at first I thaught that it'll be a perfect, hassle free solution, well I was wrong..



PEACE OUT