MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Curtis Updated His EFI Install
Posted by: NCtim
Date: May 17, 2013 07:11PM

Earlier this week he's got a new photo of his super clean fuse block and wiring behind the dash. Looking for more on his logic and decisions for why he's working this out. He is an engineer so maybe it's, "just because."

Tim


Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Curtis Updated His EFI Install
Posted by: Moderator
Date: May 18, 2013 03:56AM

You're too kind.

The car still needs a lot of work to be roadworthy in time for the meet. Fuel pump and lines. Programming/tuning. (Not to mention tires.)

I added a couple more photos to the gallery page late tonight to show more recent progress.

Here are two snapshots that didn't fit. Engine wiring is in place, but requires more detailing (conduit, etc.)

LeftHandSide-May16-2013.jpg

RightHandSide-May16-2013.jpg


hirot
Ian Hart
Ashbourne UK
(88 posts)

Registered:
06/01/2011 05:15AM

Main British Car:
1971 MGB GT (conversion) Rover 3947 R380 gearbox

authors avatar
Re: Curtis Updated His EFI Install
Posted by: hirot
Date: May 18, 2013 05:15AM

That is a piece of art....its beautiful.


MGBV8
Carl Floyd
Kingsport, TN
(4511 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Curtis Updated His EFI Install
Posted by: MGBV8
Date: May 18, 2013 08:24AM

Looking good, Curtis!

Tires? Seems like you just bought those Falken Azenis. How many miles are really on them, or are you just looking for something even stickier?


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:


Re: Curtis Updated His EFI Install
Posted by: NCtim
Date: May 18, 2013 10:08AM

That's some real nice work.

Tim


lawnvett
PJ Lenihan
Winston-Salem, NC
(477 posts)

Registered:
04/29/2009 11:37AM

Main British Car:
74 MGB-GT 3.4 V-6 crate, 5 spd

Re: Curtis Updated His EFI Install
Posted by: lawnvett
Date: May 18, 2013 05:35PM

wow tha tlooks sooo good


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1151 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: Curtis Updated His EFI Install
Posted by: 74ls1tr6
Date: May 18, 2013 09:54PM

That is way to cool looking Curtis......What lbs injecters?? and what MM size is the throtle body opening. Those injectors look like my ls1 injectors. Even the sensors look GM , TPS, ICS...??

Calvin



Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Curtis Updated His EFI Install
Posted by: Moderator
Date: May 19, 2013 03:13AM

I reckon I've only got about 20,000 miles on the tires, but they're smack worn out. A track day when they were new killed a lot of tread. I bought them shortly before BritishV8 2008 (Wisconsin), so by that measure they've done alright. Not sure what tires to buy next.

MAP, IAT, TPS, etc. are GM. I believe the throttle body is Chevy 4.3L V6. Its bore is 72mm, but there's a diffuser on the butterfly so functionally it's smaller. I'm told that Chevy used the same throttle body on a couple different engines, with various sizes of diffuser.

Injectors are Lucas. They came with the lower manifold and fuel rail from a Rover 3.9L. They've been cleaned and tested, and according to the report that came back with them each one flowed 58cc/min (22.10#/hr).

I spent today at my mother-in-law's, but hope to turn some wrenches tomorrow night. I'm keen to make some progress on a fuel tank solution.


MGB-FV8
Jacques Mathieu
Alexandria, VA
(299 posts)

Registered:
09/11/2009 08:55PM

Main British Car:
1977 MGB Small Block Ford, 331 Stroker

Re: Curtis Updated His EFI Install
Posted by: MGB-FV8
Date: May 23, 2013 04:02PM

Very impressive and super clean looking conversion; did you do it mostly yourself?


BMC
Brian Mc Cullough
Forest Lake, Minnesota, USA
(383 posts)

Registered:
10/30/2007 02:27AM

Main British Car:
1980 MGB '95 3.4L 'L32' SFI V6, GM V6T5 & 3.42 Limi

authors avatar
Re: Curtis Updated His EFI Install
Posted by: BMC
Date: June 18, 2013 11:48PM

I really like your lightweight polycarbonate rear quarter windows.


What is the material that you used for your fuse and relay panel cover? That looks Great. Did you send the product through your standard printer and cut it out or have a special machine build that cover for your application?

What size pistons do you have in the front calipers? It would appear that you have more caliper than the stock master cylinder could handle unless you have changed something i am not thinking of.

Thanks,

-BMC.


Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Curtis Updated His EFI Install
Posted by: Moderator
Date: June 19, 2013 02:04PM

The fuse block label is just laminated cardstock. I printed the cardstock on my laser printer. After laminating, I cut it out with an X-acto knife. Applied spray adhesive to the back side. It'll be easy to change down the road if I add a relay or...

I don't recall the piston size offhand, but the front brake kit is Classic Conversions part number CC-115. At the meet last week, Graham Creswick and I drove each others cars. We've both recently installed that same kit. Graham has a larger (1" bore) master cylinder, OEM-style (Ford) proportioning valve, modified pedal ratio, and discs at the rear. Most apparent result: firmer brake pedal. However, both cars stop. Yes, I'd rather have Graham's brakes - but I can't complain about how mine served through Monday's track day.


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1165 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Curtis Updated His EFI Install
Posted by: ex-tyke
Date: June 19, 2013 08:47PM

Quote:
I don't recall the piston size offhand....
My notes indicate they are twin pot 1.75" dia.


mgb260
Jim Nichols
Sequim,WA
(2461 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Curtis Updated His EFI Install
Posted by: mgb260
Date: June 21, 2013 02:59PM

Curtis, Your fuel injection setup looks great! Have you thought about updating your valve covers? OBrian Truckers has no name 215 valve covers.
[www.obrientruckers.com]


Moderator
Curtis Jacobson
Portland Oregon
(4576 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Curtis Updated His EFI Install
Posted by: Moderator
Date: June 23, 2013 02:54AM

Thanks, Jim. Those O'Brien covers appear to be a nice alternative to Offenhauser covers... but I feel my old steel covers look better with each passing year. I like that their styling is distinctly "Buick" (and without actually having the word Buick on them either!)

I see that O'Brien makes all sorts of 1950s-style club plaques. We saw hundreds of those at the Speedway Motors museum last week. It got me wondering if, perhaps, we should commission a run of "BritishV8" plaques. They might look really good on man-cave walls!


mgb260
Jim Nichols
Sequim,WA
(2461 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Curtis Updated His EFI Install
Posted by: mgb260
Date: June 23, 2013 12:06PM

Curtis, I ran the stock valve covers for years on early V6's and 215's and think they look fine. Mine were silver/aluminum though. Keep us posted on the progress. You might even convert an old carb guy like me!



MGB-FV8
Jacques Mathieu
Alexandria, VA
(299 posts)

Registered:
09/11/2009 08:55PM

Main British Car:
1977 MGB Small Block Ford, 331 Stroker

Re: Curtis Updated His EFI Install
Posted by: MGB-FV8
Date: June 23, 2013 06:14PM

WOW, you nailed it. Very clean and OEM looking........


classic conversions
bill guzman

(294 posts)

Registered:
01/09/2008 01:58AM

Main British Car:


Re: Curtis Updated His EFI Install
Posted by: classic conversions
Date: June 26, 2013 11:39PM

Very nice Curtis, sharp looking engine. Well done!!!

Are you saying you are going to do a write up on the brakes.

Quote:
I don't recall the piston size offhand....
My notes indicate they are twin pot 1.75" dia.

Correction 4 piston dynalite caliper.

I use a 6 piston caliper, just because :-)
Picture 013.jpg



Edited 1 time(s). Last edit at 06/26/2013 11:43PM by classic conversions.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6468 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Curtis Updated His EFI Install
Posted by: BlownMGB-V8
Date: June 27, 2013 09:32AM

I really like the way Curtis' engine compartment looks with the black OEM valve covers and his custom plenum. Very clean and clearly performance oriented. I drove his car around Omaha and I must say the performance is excellent. He still has a little more he will be able to wring out of the new EFI system but was very close at that point and there was nothing objectionable in the engine's operation. Very well done Curtis!


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: Curtis Updated His EFI Install
Posted by: pspeaks
Date: June 27, 2013 12:42PM

I must concur, I went for a ride with Curtis in Palestine and was completely impressed, and that was before the injection.


Paul


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1151 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: Curtis Updated His EFI Install
Posted by: 74ls1tr6
Date: June 29, 2013 07:29PM

Driving Curtis's car in Palestine was the second GT that I've driven. I liked the GT enough in just driving two of them to want one for Brenda and I. I told Curtis that if Brenda drove his car she would want a GT. Curtis's car feels light and you can tell when you drive it. It has driven me to a new illness. The first GT I drove was Robert Milner's when I bought his Miata seats from him.

What I would like to see someday is for Curtis to win the lottery, then watch him build himself a GT with his thought process without money cap.
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