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Location:
Brisbane
Registered:
October 2002
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how does the std 18RG computer handle big cams/valves
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Sun, 30 May 2004 06:46
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i am getting a bigger cams and bigger Ferrea valves put in my spare head, and i'm getting the shits with the unreliability of my solexes.
will the std comp or any of the equivilants shit them selves with big cams
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: how does the std 18RG computer handle big cams/valves
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Sun, 30 May 2004 07:33
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they wont handle it, they are analog in design and basically apply a ratio of fuel to air based on the AFM position.
Aftermarket ECU is what you;ll need if you want efi.
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Location:
Brisbane
Registered:
October 2002
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Re: how does the std 18RG computer handle big cams/valves
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Sun, 30 May 2004 09:00
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what ecu should i go for,
what are those megasquirt things like,
how would i hook up boost retard in the future in relation to referencing from the comp, or would i have to go for a mechanical retard
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Location:
Brisbane
Registered:
February 2003
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Location:
Brisbane
Registered:
October 2002
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Re: how does the std 18RG computer handle big cams/valves
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Sun, 30 May 2004 09:52
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would i still be able to run a dizzy if the retardation was to be electronically controlled, or would i have to run a crankangle sensor and have individually coils like clancey.
i'd like the least effort in changing the efi system if i was to change to a turbo
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Location:
Brisbane
Registered:
February 2003
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Re: how does the std 18RG computer handle big cams/valves
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Sun, 30 May 2004 10:54
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| Mr DOHC wrote on Sun, 30 May 2004 19:52 |
would i still be able to run a dizzy if the retardation was to be electronically controlled, or would i have to run a crankangle sensor and have individually coils like clancey.
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you would run a locked dizzi with no mech advance. the computer works out when to fire. needs a sensor in the dizzi to work out engine speed (e.g. retains the existing electronic pickup). Needs some initial setup work to get pickup triggering at a specific point - but after that, is done via computer.
to do the CAS and coil packs requires EDIS or similar (which means lots of fun trying to import 2nd hand car parts from the US or UK).
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i'd like the least effort in changing the efi system if i was to change to a turbo
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... you might want to locate larger injectors then and swap over to them upon turbo. i doubt 18RGUE injectors would supply enuf fuel at boost.
there's a few calculators in the megsquirt site to help out hre - plus go thru the list of "it works!" cars and see what injectors are used for 2 litre turbo. Speed Technology recommended 300cc bosch injectors for my engine.
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