terryroberts
|
| posted on 7/5/09 at 05:03 PM |
|
|
su carbs on zetec
hi guys thinking about putting some su carbs on my 1.8 zetec... have to make up a manifold for bike carbs so why not make one for su's!!! what
do you all think. mad idea or doable??
terry
|
|
|
|
|
clairetoo
|
| posted on 7/5/09 at 05:08 PM |
|
|
Mad idea .
Its cuz I is blond , innit
Claire xx
Will weld for food......
|
|
|
cliftyhanger
|
| posted on 7/5/09 at 05:11 PM |
|
|
No point. The SU's ARE a very good carb, but I doubt putting twins or even quad carbs is going to be easy. Either dellortos or EFI I reckon 
|
|
|
jacko
|
| posted on 7/5/09 at 05:23 PM |
|
|
 
twin SU carbs/1
 
twin SU carbs/2
 
twin SU carbs/3
|
|
|
jacko
|
| posted on 7/5/09 at 05:43 PM |
|
|
Yes use bike carbs i did after the SU's but the SU carbs were very good but took a bit of setting up to get right
 
carbs on manifold
Jacko
|
|
|
goodall
|
| posted on 7/5/09 at 05:50 PM |
|
|
bike carbs and su's are the same principle as far as i can gather, just bike carbs are a perfected jap version, thats why get better mpg over
webers, so why not, if have them lying about, its low-cost
[Edited on 7/5/09 by goodall]
|
|
|
The Baron
|
| posted on 7/5/09 at 06:45 PM |
|
|
I am currently doing a Pinto to Zetec conversion project.
I am going to use my old DGAV carb, on a cross flow manifold, then........ I have purchased an adaptor plate to convert a cross flow mnifold to a
zetec head (aparently its quite popular in the banger racing world)
so...... if you can get a su manifold for a cross flow, what you are proposing is quite possible.....
HTH,
Cheers,
B
|
|
|
jpindy3
|
| posted on 7/5/09 at 07:10 PM |
|
|
i got load of those plates,my mate who i work with races stock cars,i would stick with bike carbs
|
|
|
big_wasa
|
| posted on 7/5/09 at 08:53 PM |
|
|
ive seen one on a stock car.
The guy just wedged a 90 deg bend into the mondeo manifold and stuck one big Su on the end of it.
|
|
|
DIY Si
|
| posted on 8/5/09 at 10:46 AM |
|
|
Whilst bike carbs are better, if you have the SU's and the stuff to make a manifold, then it will be cheaper. Personally though, I'd go
bike carbs as they are essentially like SU's but better.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
|
|
|
ss1turbo
|
| posted on 8/5/09 at 06:01 PM |
|
|
I fitted an SU onto a CVH using an RSTurbo MFI manifold - ran fine until it got hot then wouldn't restart! Think the manifold volume was too
big....
Twin SU's don't work as well as they should due to the firing order (sucks twice from each carb, then leaves it alone for a whole
revolution).
A Single would do the job better..and i've seen one done to a 1600 Pinto using a twin weber manifold with a cover plate over the top, and a hole
cut in the back for the carb. Apparently made a little extra power, and was loads better on fuel economy!
Long live RWD...
|
|
|
britishtrident
|
| posted on 8/5/09 at 07:59 PM |
|
|
Having spent a lot of my life working with single, twin and triple SUs and Stromberg CDs ---
I would say SU are very good very simple carbs (although depends a lot on the exact sub type eg HS series carbs are cheap rubbish especially the
Waxstat type. ----- but my advice is don't even go there bolt on a Rover M16 or T16 Manifold and Microsquirt it.
[Edited on 8/5/09 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
DIY Si
|
| posted on 8/5/09 at 10:23 PM |
|
|
quote:
Originally posted by ss1turbo
Twin SU's don't work as well as they should due to the firing order (sucks twice from each carb, then leaves it alone for a whole
revolution).
Really? How does that work with a 1, 3, 2, 4 firing order that I thought the Zetec had? Or have I missed something?
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
|
|
|
ss1turbo
|
| posted on 9/5/09 at 07:44 AM |
|
|
quote:
Originally posted by DIY Si
quote:
Originally posted by ss1turbo
Twin SU's don't work as well as they should due to the firing order (sucks twice from each carb, then leaves it alone for a whole
revolution).
Really? How does that work with a 1, 3, 2, 4 firing order that I thought the Zetec had? Or have I missed something?
I thought it was 1,3,4,2 - so 3, then 4, foloowed by 2 then 1..Certainly is on a CVH.
Long live RWD...
|
|
|
jacko
|
| posted on 9/5/09 at 08:02 AM |
|
|
As you can see in my other post i had su's on my pinto 1342 and they worked great
|
|
|
terryroberts
|
| posted on 9/5/09 at 12:19 PM |
|
|
hi jacko what size carbs were you using? im thinking some of a dolomite sprint 1.75" should do i think. are good on sprints for upto 150bhp.
|
|
|
jacko
|
| posted on 9/5/09 at 04:12 PM |
|
|
Hi mine were 1 3/4 su's but as you can see in the photos i now use zx9r bike carbs and the difference is unbelievable
if you are looking for speed / performance
bike carbs is the way to go in my opinion
|
|
|
