Apparently, Bob Forbes ran a pair of side draught SU's on the 308 in one of his L34's. I am just wondering if anyone would have any info or pictures of them in situ? Or just a pic of a manifold would be great if there was an aftermarket one available back in the day. Nothing on Goggle.
SU carbys on a V8?
Started by
Shiney005
, Dec 20 2025 11:51 AM
7 replies to this topic
#1
Shiney005
View Garage
-
- Members
-
- 9,988 posts
Oh My, Don't you post alot
- Name:Laurie
- Location:Dubya Hay
- Car:L34, LH SL, LX SL, EK and some Commodores.
- Joined: 19-January 12
View Garage
Posted 20 December 2025 - 11:51 AM
#2
RallyRed
-
- Members
-
- 8,256 posts
Oh My, Don't you post alot
- Name:Col
- Location:NSW
- Car:LC GTR etc
- Joined: 02-October 11
Posted 20 December 2025 - 01:55 PM
Never heard of that...interesting
#3
V-SLR5000-P
View Garage
-
- Members
-
- 1,323 posts
Forum Fixture
- Location:Victoria
- Car:L34 x 2
- Joined: 14-November 06
View Garage
Posted 20 December 2025 - 03:42 PM
The MG B V8 had a pair of SUs on a hideous manifold which must have done nothing for breathing. The 308 would demand a couple of big jugs (3" is about as big as they came) could there have been more than two carbs? Jag and Austin Healey six cylinder engines ran three and triples were common on hot grey and red motors. Would be an interesting set up.
#4
AbsynthHatch
-
- Members
-
- 765 posts
Forum Fixture
- Name:Mark
- Location:Cairns, Qld.
- Joined: 10-March 09
Posted 20 December 2025 - 11:06 PM
Could you adapt the twin Weber setup to take 4 SU's
#5
Shiney005
View Garage
-
- Members
-
- 9,988 posts
Oh My, Don't you post alot
- Name:Laurie
- Location:Dubya Hay
- Car:L34, LH SL, LX SL, EK and some Commodores.
- Joined: 19-January 12
View Garage
Posted 21 December 2025 - 11:38 AM
Bob said there were two carbys. Twin 3" would have a huge CFM rating I would have thought.
The 4.6 Range Rover motor ran with two of them.
Rover_4.6_V8_on_SU_carbs.jpg 238.59K
1 downloads
#6
AbsynthHatch
-
- Members
-
- 765 posts
Forum Fixture
- Name:Mark
- Location:Cairns, Qld.
- Joined: 10-March 09
Posted 23 December 2025 - 03:12 PM
If you wanted a unique induction set up, that would be the way to go.
#7
Dr Terry
-
- Moderators
-
- 3,356 posts
Technical + Numbers Guru + Moderator
- Location:Eastwood (Sydney) NSW
- Joined: 13-November 05
Posted 23 December 2025 - 07:05 PM
Is there such a thing as a 3-inch SU ?
Dr Terry
#8
Shiney005
View Garage
-
- Members
-
- 9,988 posts
Oh My, Don't you post alot
- Name:Laurie
- Location:Dubya Hay
- Car:L34, LH SL, LX SL, EK and some Commodores.
- Joined: 19-January 12
View Garage
Posted Yesterday, 11:21 AM
No. 2 inch was as large as they got, however with two of them you could potentially be up around 900 cfm.
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
