Triumph Sports Cars

engine swaps and other performance upgrades, plus "factory" V8s (Stag and TR8)

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Dan B
Dan Blackwood
South Charleston, WV
(971 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

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TR4AIRS Multiport Fuel Injection
Posted by: Dan B
Date: August 19, 2008 11:52AM

Does anybody recognize this manifold?
MVC-722S.JPG
MVC-723S.JPG


V6 Midget
Bill Young
Kansas City, MO
(1337 posts)

Registered:
10/23/2007 09:23AM

Main British Car:
'73 MG Midget V6 , '59 MGA I6 2.8 GM, 4.0 Jeep

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Re: TR4AIRS Multiport Fuel Injection
Posted by: V6 Midget
Date: August 19, 2008 12:49PM

Dan, I'm not certain, but I think it may be from a Chevy GEO. It looks familiar to some I've seen while looking for intake parts for my V6 conversion years ago. I'd think around the late 80s or early 90s as that's the time period GM was using the term multi port for their fuel injection systems.


Dan B
Dan Blackwood
South Charleston, WV
(971 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: TR4AIRS Multiport Fuel Injection
Posted by: Dan B
Date: August 19, 2008 02:09PM

Thanks Bill, I'll see what I can find on those cars. The Chevy parts guy in Florence did mention a Storm from about 92 when we were looking for a plug....


tr4long
Rob Furlong
Louisville, KY
(5 posts)

Registered:
08/20/2008 05:38PM

Main British Car:
1962 TR4

Re: TR4AIRS Multiport Fuel Injection
Posted by: tr4long
Date: August 20, 2008 05:43PM

That does look like an old GM plenum of some sort. How well does it work? I have been considering a home brewed EFI setup for my tr4 and that looks a lot like what I have been envsioning, except that i was figuring on fabricating a plenum to hold the throttle body.


Dan B
Dan Blackwood
South Charleston, WV
(971 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: TR4AIRS Multiport Fuel Injection
Posted by: Dan B
Date: August 21, 2008 08:41AM

Rob,
We had to cut the two inner tubes and reconfigure them. We used an old manifold I had for the mounting flanges. We didn't have to change the dimension of the outer runners though. Of course the fuel rail had to be modified to fit the reconfigured middle two runners as well.

We actually do not have it running yet. We did the conversion this past weekend, but had an electrical snafu that Jim has been solving since I left his place in Florence on Monday evening. We are using the Megaquirt controller and had some issues with the Crane Cams XR700 ignition setup.

If you want to see what we did in person, the car will be at Jim's place in Florence for a couple of weeks at least.

[forum.britishv8.org]


tr4long
Rob Furlong
Louisville, KY
(5 posts)

Registered:
08/20/2008 05:38PM

Main British Car:
1962 TR4

Re: TR4AIRS Multiport Fuel Injection
Posted by: tr4long
Date: August 21, 2008 07:10PM

Good stuff. I am in the very early stages of my restoration and I am still undecided which way to go. The car is pretty rough, which leads me to consider a v8 conversion. That way I don't feel so bad about hacking up a really clean specimen. I am a welder/fabricator by trade, with a background in Pro Street and drag car chassis builds, so that part does not scare me. The car is an early TR4, (vin# ct471L). I have not seen many TR4's in the US with an earlier number, so I am not sure if that makes it a more valuable car to do an original restoration.

The car has been sitting for probably 20+ years. I have started it briefly, but I do not know the true condition of the motor. I am sure it will need more than a fuel pump, tune-up and carb rebuild to be in good running order.

There is also a small block Chevy sitting under the workbench that I need to do something with. If it was a small block Ford, the question would already be answered.

I just recently read about Jim's work on this website. If I am ever up around Florence I am certainly going to look Jim's place up. It's nice to know there are others out there even more daring.

Good luck getting the combo up and running. Be sure to let all the Lucas smoke out when you de-bug the electricals. Be sure and post the results.

Rob F.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5803 posts)

Registered:
10/23/2007 12:59PM

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

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Re: TR4AIRS Multiport Fuel Injection
Posted by: BlownMGB-V8
Date: August 27, 2008 11:39PM

We have ignition.
Still some serious tuning to be done, but that's one big milestone.

Jim



Dan B
Dan Blackwood
South Charleston, WV
(971 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: TR4AIRS Multiport Fuel Injection
Posted by: Dan B
Date: September 11, 2008 01:19PM

I tried to blow all the Lucas smoke out, using Jim's MG blower, but we still had a vacuum leak at the manifold gasket. I was able to tow the car home, and got it started so I could drive it into my garage (which is at the end of a steep but short driveway), and sealed the manifold with Right Stuff. Now I can start playing with the tuning.


tycorace
mark thompson

(45 posts)

Registered:
05/31/2008 02:00AM

Main British Car:


Re: TR4AIRS Multiport Fuel Injection
Posted by: tycorace
Date: December 07, 2008 11:49PM

I would not get too concerend about an early tr 4 as they a not in to high a demand. first problem is he frame most of them until some time in 64 they had tr 3 frames that had 2 inch box sabed onto the front suspension witch is a week point. the seats were not very good , and the early 4's had a painted dash. the 4a'sbrin a much highe price restored j
mark thompson


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