ExMil109
Active Member
Yes, the manifolds from the 2.25 will fit the head no problem, but there may be a clearance issue with the starter motor. The exhaust downpipe on the 2.5 manifold is slightly further forward than on the 2.25. I'm building a 2.5 engine at the moment, but haven't got as far as fitting the starter, so can't confirm if it fits or not. No doubt someone on here will know...
I think ACR do an adapter to fit an SU carb onto the 2.5 inlet manifold, but it involves some grinding out of the manifold.
What's the problem with your Weber DMTL? I was planning to use this carb on my new engine, so I'm keen to find out if it has any known issues.
EDIT: The 2.5 SU adaptor is made by HNJ Engineering.
I think ACR do an adapter to fit an SU carb onto the 2.5 inlet manifold, but it involves some grinding out of the manifold.
What's the problem with your Weber DMTL? I was planning to use this carb on my new engine, so I'm keen to find out if it has any known issues.
EDIT: The 2.5 SU adaptor is made by HNJ Engineering.
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Hicap phill
Well-Known Member
Are you using the swirl pot?
Do NOT poke anything in the jets, soak in fuel and blow with air-line or your mouth ... yes, you get used to the taste ...
minecab
Active Member
do you mean fuel pressure regulator ? no I am on manual pump .
minecab
Active Member
always use mouth. must have consumed many litres of fuel over the years.
Hicap phill
Well-Known Member
These engines run electric pump into a swirl pot allowing pressured petrol into the carb.
This allows for for no fuel starvation On wide throttle openings.
Iv not run 1 of these engines without the swirl & standard pump.
Could your set up be causing your problems ?
