• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

SU HD8 carb set

Share this page

AUSMHLY

AUSMHLY

Yoda
Country flag
Offline
I've heard that the dual SU HD8 carbs are noted as front and rear.

Is there any difference between the two?

They seem identical, as in replacement parts.

I am told that when I take them apart, to make sure not to switch parts from one to the other. Why?

Do I have replace them to the same position as to which one was in the front and which one was the rear.

Would someone elaborate.
 
AUSMHLY said:
I've heard that the dual SU HD8 carbs are noted as front and rear.

Is there any difference between the two?-----Yes

They seem identical, as in replacement parts.

I am told that when I take them apart, to make sure not to switch parts from one to the other. Why?---Because they are not that precise in build but have been matched part wise Particularly as to the piston/ bell fitting.

Do I have replace them to the same position as to which one was in the front and which one was the rear.---Yes that is the correct procedure.

Would someone elaborate.
Click to expand...

Someone just did--------------- /bcforum/images/%%GRAEMLIN_URL%%/grin.gif
 
ausmhly, may i ask why your taking them apart? are you going to rebuild or re-use the original parts? anyway before you break them down check to see if the throttle shafts are a sloppy/loose fit you might want to have them re-bushed and replaced as i did, joe curto inc. knows his stuff and very helpfull hes in college point n.y. did mine and he has all the parts for these carbs, 718-762-6287 /bcforum/images/%%GRAEMLIN_URL%%/savewave.gif
 
Hi 7x4,
Thanks for the info.

I tried cleaning the carbs in the car, but found I can only do a so so job. I could not get to a lot of areas.

Once I removed them, and started to clean them, I decided to polish the bell housings. Once they were done, I thought how nice would they look if I polished everything.

Not concourse, I know. My car is a nice driver.
 
Looks like you may be raising a trailer queen. They are beautiful. As it was you are winning every show I've been to. (note; green with envy)
 
The simple answer to your question is the float bowls are on opposite sides, so it is sensitive to whether it's front or rear. Also the throttle shafts are slightly different from front to rear. Finally the rear carb throat body has the dizzy vacuum lead and the front doesn't.
 
healeynut said:
The simple answer to your question is the float bowls are on opposite sides, so it is sensitive to whether it's front or rear. Also the throttle shafts are slightly different from front to rear. Finally the rear carb throat body has the dizzy vacuum lead and the front doesn't.
Click to expand...


Does this simply mean there is some difference between the two!!---Keoke- /bcforum/images/%%GRAEMLIN_URL%%/rolleyes.gif
 
Back
Top