So I read this...
Granted it's for bikes but I found this to be more in-depth than anything else I've stumbled upon; not to mention the displacement is more similar than the articles written around big block drag queens.
Figuring a modest 7-8 psi from the M90 Eaton mounted to the M20, here is the proposed plans I have for the motor. I would greatly appreciate some input as to where I can improve this design. So far, aside from custom pistons and Megasquirt, this is a relatively low budget build.
Ported 885 Head (ARP studs)
O-ring block
Valve Option A: 43mm (+1) intake with 38mm (+2) from a 2002 tii
Valve Option B: 42mm intake and 37mm (+1) exhaust
Stock 256° Camshaft
Stock Dual Springs
HD Rockers
85mm Custom 8.5:1 Forged Pistons
135mm B25 Rods
81mm B27 Crank
Megasquirt 2
Is there enough room to enlarge the exhaust seat far enough for Option A?
Am I missing anything or is there any reason to upgrade beyond this?
What size injectors do I need?
Is it worth replacing bearings, springs, pumps and all that to ensure longevity?
And lastly...
Power estimates? 250whp?
Experienced insight would be much appreciated as I want to have my setup as concrete as possible going into this build. I am ready to start gathering parts but I would like the advice only R3V can offer!
Granted it's for bikes but I found this to be more in-depth than anything else I've stumbled upon; not to mention the displacement is more similar than the articles written around big block drag queens.
Figuring a modest 7-8 psi from the M90 Eaton mounted to the M20, here is the proposed plans I have for the motor. I would greatly appreciate some input as to where I can improve this design. So far, aside from custom pistons and Megasquirt, this is a relatively low budget build.
Ported 885 Head (ARP studs)
O-ring block
Valve Option A: 43mm (+1) intake with 38mm (+2) from a 2002 tii
Valve Option B: 42mm intake and 37mm (+1) exhaust
Stock 256° Camshaft
Stock Dual Springs
HD Rockers
85mm Custom 8.5:1 Forged Pistons
135mm B25 Rods
81mm B27 Crank
Megasquirt 2
Is there enough room to enlarge the exhaust seat far enough for Option A?
Am I missing anything or is there any reason to upgrade beyond this?
What size injectors do I need?
Is it worth replacing bearings, springs, pumps and all that to ensure longevity?
And lastly...
Power estimates? 250whp?
Experienced insight would be much appreciated as I want to have my setup as concrete as possible going into this build. I am ready to start gathering parts but I would like the advice only R3V can offer!
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