Tweet
Here we have the Fiat 2.0 TC with its Weber 34 ADF 250 carb:
I think the car is suffering from insufficient airflow to the carb as I feel it should 'go' a bit more (I might be wrong; haven't had it tested yet - that's scheduled in maybe March or April at a local tuning specialist). While it certainly does pull and I have no trouble putting the hammer down and overtaking... it just feels as if it should go that bit more from a power to weight ratio.
The air filter is as shown; allowing air in from the perimeter and also through the top - but the top flow is impeded by the bonnet that fits snug over the top. There is a perfect ring shape on the bonnet under side where the filter meets it and I'm guessing the bonnet is sucked onto the filter during acceleration.
So, I am looking for a solution. On some cars I have seen big air intake cowls on the bonnets; often big ugly things that would look out of place on this style car, I am told there are 100s of different style intake cowls and that there would be one out there which would match the image of the Marlin... I confess I have hunted throughout the internet and drawn a blank. My Dad has suggested that we cut louvre vent holes in that area of the bonnet (just as the engine bay sides have) and this would be ok. I am not so sure that's the best way forward.
My concern with cutting any hole and getting louvres or an air intake cowl is the chance of water getting in... How do other cars with cowls prevent rain water getting into the filter? Air yes but water no?
Much obliged for your thoughts / advice!
I think the car is suffering from insufficient airflow to the carb as I feel it should 'go' a bit more (I might be wrong; haven't had it tested yet - that's scheduled in maybe March or April at a local tuning specialist). While it certainly does pull and I have no trouble putting the hammer down and overtaking... it just feels as if it should go that bit more from a power to weight ratio.
The air filter is as shown; allowing air in from the perimeter and also through the top - but the top flow is impeded by the bonnet that fits snug over the top. There is a perfect ring shape on the bonnet under side where the filter meets it and I'm guessing the bonnet is sucked onto the filter during acceleration.
So, I am looking for a solution. On some cars I have seen big air intake cowls on the bonnets; often big ugly things that would look out of place on this style car, I am told there are 100s of different style intake cowls and that there would be one out there which would match the image of the Marlin... I confess I have hunted throughout the internet and drawn a blank. My Dad has suggested that we cut louvre vent holes in that area of the bonnet (just as the engine bay sides have) and this would be ok. I am not so sure that's the best way forward.
My concern with cutting any hole and getting louvres or an air intake cowl is the chance of water getting in... How do other cars with cowls prevent rain water getting into the filter? Air yes but water no?
Much obliged for your thoughts / advice!
Comment