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Question
- Thread starter jlaird
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Trevor Jessie
Yoda
Offline
Yes
I think that there are two manifolds for HS2's, one for the 1100's and one for the 1275's (this is all from memory 20 years ago). The 1100 manifold holds the two carbs about 1/4" closer together than the 1275 ones and requires shorter connecting shafts too. Either set-up will work on a 948.
Bill
Bill
John Kuzman
Jedi Trainee
Offline
Bill -
Your memory is good! I thought I was losing my mind when I converted to HS2s and had an 1100 manifold, but 1275 linkage. Finally realized after fighting with the situation for several days that there is a difference between the manifolds as far as the distance between the carbs.
More experienced LBC owners may have already known this, but it sure tested my patience and sanity!
Your memory is good! I thought I was losing my mind when I converted to HS2s and had an 1100 manifold, but 1275 linkage. Finally realized after fighting with the situation for several days that there is a difference between the manifolds as far as the distance between the carbs.
More experienced LBC owners may have already known this, but it sure tested my patience and sanity!
GB1
Yoda
Offline
Jack:
They did use them on factory works carbs. I would recommend a 1098 head to go along with it if you don't already have one. Also, I would use an aftermarket manifold as well, they are about $200 bucks.
The original has a bypass tube that is too large and really knocks down the flow. It would not make much sense putting them on with a 948 head and a stock manifold.
Patrick
They did use them on factory works carbs. I would recommend a 1098 head to go along with it if you don't already have one. Also, I would use an aftermarket manifold as well, they are about $200 bucks.
The original has a bypass tube that is too large and really knocks down the flow. It would not make much sense putting them on with a 948 head and a stock manifold.
Patrick
OP
jlaird
Great Pumpkin
Offline
Yes Peter, duh. I knew that.
Hi Pat, yep just putting back parts when I can to improve this little engine.
Figure 998 cc, have
Street cam
206 or 295 head
1275 exhaust
H2 carbs
That ought to do it for this old boy. Think it might go from 43HP to 60 some. 1/3 improvement. No rush though, got to get everything else right first and recover from this money pit.
Hi Pat, yep just putting back parts when I can to improve this little engine.
Figure 998 cc, have
Street cam
206 or 295 head
1275 exhaust
H2 carbs
That ought to do it for this old boy. Think it might go from 43HP to 60 some. 1/3 improvement. No rush though, got to get everything else right first and recover from this money pit.
