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Author: Subject: Upgrading RV8 from carbs to EDIS
scudderfish

posted on 21/11/09 at 03:59 PM Reply With Quote
Upgrading RV8 from carbs to EDIS

I thought I'd start a new thread about this rather than hijacking Paul's.

I bought my Fury built a few years back and I was never comfortable with the fact that it was using a 36DGAS carb from the V6 Capri that donated the rear axle. I'm a geek, I'm very comfortable with computers and electricity (that statement will come back to haunt me), so I always envisaged converting to EFI at some point. That point arrived yesterday when my car died on me again and I thought I may as well SORN it now.

The heart of the system will be a Megasquirt 1 ECU from extraefi.co.uk. The manifold is an Offenhauser 360 from eBay, and the 4 barrel throttle body is from Bill Shurvinton. I was originally planning to do fuel only at first and then move over to EDIS at a later date, but as it was the ignition amp that died on me yesterday, I put in an order for the EDIS-8 stuff from trigger-wheels.com today.

Anyway, on with the photos :-


The orignal carb and manifold (a regular SU manifold with the pent roof cut off)


Old and new together


New one dropped in place. I'll have to reroute the pipes to the remote filter as they currently block the fuel feeds.

Regards,
Dave

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mark chandler

posted on 21/11/09 at 04:55 PM Reply With Quote
You will need to make something up to replace the distributor as it has a bevel gear and runs the oil pump.

If pushed you can chop off the top of the alternator and machine to fix a bearing and cap.

Alternative is late 3.9 front cover as this has a different oil pump, later 4.0/4.6 engines have completely different timning covers, camshafts etc so not an easy swap.

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Paradoxia0

posted on 21/11/09 at 05:23 PM Reply With Quote
quote:

You will need to make something up to replace the distributor as it has a bevel gear and runs the oil pump.



Or just leave the dizzy in place with no cables going to it! I agree it does like tidier removed but leaving in place means it will continue to work as is with the oil pump.

Mark





There is no replacement for displacement...

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scudderfish

posted on 21/11/09 at 05:29 PM Reply With Quote
I was planning to leave the dizzy in place until it was all working and I was looking for a new way to break it. Space is at a premium around the front of the engine so it will go eventually.
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RAYLEE29

posted on 21/11/09 at 06:53 PM Reply With Quote
Hi, youll prob find the engine runs cooler with the offy inlet
also if you have the height a 1" spacer between manifold and throttle body seems to help the engine breathing it did on mine ive got a holley on there (tr7v8)
Ray

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Paul (Notts)

posted on 21/11/09 at 07:09 PM Reply With Quote
Looks a lot more compact than my installation Dave.

I changed to megajolt last year and just left the dizzy in place. I think I will leave it fore the time being during the megasquirt conversion BUT at some point I will cut it down to just drive the oil pump.

What fuel pump are you planning on using as I still need to sort one out. + what fuel regulator?

Cheers

Paul

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scudderfish

posted on 21/11/09 at 07:15 PM Reply With Quote
It needs to be small to keep it under the bonnet. The regulator came from Bill with the body. I don't know what it is, but I told him what I'm doing so I assume it is reasonably suitable. I may replace it with an adjustable one though so I can see/control the pressure.
I don't know which pump I'll use yet. There seem to be some suitable ones on eBay at the moment for about £25, but that does seem too cheap. I also need to sort out a HP filter.

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Simon

posted on 21/11/09 at 10:33 PM Reply With Quote
Go through my blog, there's a bit in there where I modify the distributor so it still works the pump, but the rest is gone.

ATB

Simon






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