Help me ballpark horsepower/torque on the 2.7 L build

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Re: Help me ballpark horsepower/torque on the 2.7 L build

Post by Type 4 Unleashed » Mon Sep 21, 2020 2:42 pm

falcor wrote:
Mon Sep 14, 2020 12:51 am
I think you should do a bit better than 160? thats what I get from my 2,3 litre with a Web 163/86b cam and 10:1 compression.
I dont know carbs at all but arent 44's 44 mm in diameter? If so thats 21% more surface area than my 40 mm ITB's.
44's come stock with 36mm Venturi, 40mm Venturi can be had for a fee. And 40mm Venturi are what come stock in 48mm IDf's.

A Venturi change will require a re-jet.
Richard

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“Have you ever noticed how some people never
have the money to do it right, but can always
find the money to do it twice ?”

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falcor
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Re: Help me ballpark horsepower/torque on the 2.7 L build

Post by falcor » Mon Sep 21, 2020 11:36 pm

Type 4 Unleashed wrote:
Mon Sep 21, 2020 2:42 pm
falcor wrote:
Mon Sep 14, 2020 12:51 am
I think you should do a bit better than 160? thats what I get from my 2,3 litre with a Web 163/86b cam and 10:1 compression.
I dont know carbs at all but arent 44's 44 mm in diameter? If so thats 21% more surface area than my 40 mm ITB's.
44's come stock with 36mm Venturi, 40mm Venturi can be had for a fee. And 40mm Venturi are what come stock in 48mm IDf's.

A Venturi change will require a re-jet.
Aaah so my 40 mm itbs correspond somewhat to IDF 48's. Then I guess airflow could be more of a restriction than I had guessed before with the combo of 2,7 liters and smaller throttles. I am guessing it will probably pull hard under 5k but flatten off quicker up top than a less restricted engine?

Thank you Richard, I learned something new today. :)

Tdskip
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Re: Help me ballpark horsepower/torque on the 2.7 L build

Post by Tdskip » Fri Oct 16, 2020 12:09 pm

Sorry for the very delayed response Bill – that is fantastic information and thank you very much for sharing it. I must’ve missed the notification that someone replied, sorry!

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