MTFCA Forum

Just wanted to say that I noticed a difference in performance by switching my stock intake manifold to the High Volume intake manifold. I run a texas T modern carb. Anyone else have a similar experience?

Tim Williams

I have a completely stock engine, even sleeved back to original bore. Has aluminum pistons and standard size(SKAT)crank. I won a high volume intake manifold as a door prize. I use a Holly NH carburetor and Anderson timer. It ran good at high speeds with partially open throttle, but slow on low speed and hill climbing. When the throttle was opened it didn't seem to get enough gas. I put back the stock intake manifold and it pulls very well.
I think the manifold would work very well if you made other modifications such as increased exhaust volume and higher compression and a different carburetor, but not so good with stock. I compare with blowing with your lips puckered (standard) and blowing with mouth open. When the throttle is wide open there is not enough vacuum to suck in the fuel.
Norm

Norman,

My engine is standard bore with cast iron pistons, I have a Z head and a exhaust header. My car is a speedster. I also use an electric fuel pump.

Tim Williams.

I seem to recall an earlier thread in which the OP asked which single, bolt-on type speed/power accessory would give the most bang for the buck if that was the only change made to the engine. I don't recall what the consensus was, if any.

RV, there's many additions that give their own particular boost to the Model T engine. Some would put a 7° advanced timing gear, a Z high compression cylinder head, a 280 camshaft, " high compression " pistons, a high volume intake manifold, a straight NH carburetor, Riley high lift lifters, synthetic engine oil..(your choice of multi-weight or straight),. Or even a change in the ignition system whether it be a distributor, a different commutator, the new " I " Timer or the new "E" Timer. ...... .. Knowing what I've learned for the past,. .... I would pick the. "E " Timer . As a single most effective addition to the Model T engine performance.

And to rank that top pick, I'd say be a tie with the ECCT system of tuning ignition coils. Those that have used either of these items have been vocally pleased with the results.....