Triumph Sports Cars

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

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mgb260
Jim Nichols
Sequim,WA
(1725 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: TR7 LexusV8 conversion
Posted by: mgb260
Date: November 12, 2014 12:32PM

Good work! Guys. Dan, the Caravan fan looks good!


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: November 12, 2014 02:15PM

It really does. It is hard to show it in the pictures, but the radiator setup is awesome. Jim and Carl did some brainstorming and came up with the mounting ideas.


Scott68B
Scott Costanzo
Columbus, Ohio
(462 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: TR7 LexusV8 conversion
Posted by: Scott68B
Date: November 12, 2014 06:11PM

Dan,

Looking great!! I can't wait to see your car!


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: TR7 LexusV8 conversion
Posted by: MGBV8
Date: November 14, 2014 01:12PM

We kicked around some ideas, but that magic belongs to the proprietor of Blackwood Labs.

It may look like it in the pic, but I guarantee I was not watching Jim weld with my helmet up. I only had a helmet cause he asked me to tack something while he held it. No flash burn for me. :)


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5153 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: TR7 LexusV8 conversion
Posted by: BlownMGB-V8
Date: November 15, 2014 10:18AM

Those guys are too modest, all I did was turn their ideas into metal.

I do think the install can be made to look remarkably clean though, as well as fully functional. Some tricky work remains with the cowl scoop for fresh cabin air, but Jim Stuart gave me some good ideas with the way he did his cowl for his injected RoverV8 TR7. Basically he split it in the middle and installed the halves separately. I think that can work here as well. The heater hose routing is simple and direct, but we will need to plumb in a heater valve there too. There looks to be just enough room to make the stock hood latch work by trimming it a quarter inch or so. I don't know how we are going to do the wiring yet but the MS harness will help, and splicing into the OEM connectors with adhesive butt connectors is the smart solution, provided we can find enough of them that haven't gotten brittle. The radiator hoses worked out remarkably well and the stock surge tank will control coolant level.

So far except for some fairly easy fabrication that anybody with an angle grinder and a mig welder could handle, this has been a simple and problem free swap. Provided your transmission adapter is right of course. I would recommend it for the TR7, I think it is the right engine for the car.

Jim


trseven
Gerry Conant
Council Bluffs Iowa
(6 posts)

Registered:
11/05/2012 04:07PM

Main British Car:
1980 Triumph TR7 Stock 2.0

authors avatar
Re: TR7 LexusV8 conversion
Posted by: trseven
Date: April 13, 2015 09:24AM

Dan, any progress? You’d be amazed how many times I check the site to see if you’d updated your post! :)
Gerry


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: April 14, 2015 10:53AM

Hi Gerry,

We are working on a date for another weekend. Possibly May 2. I have been collecting parts, including the connector and wiring for the megasquirt controller, a hose for the clutch, fluids, clamps, etc. I got the two starters I have tested and they are both good. They are both remanufactured, so we will use the Toyota reman. I have been pretty anxious to get back to it, but Jim has been so covered up with other projects we have not been able to work out a weekend to get together.
When we finalize plans for our next work weekend, I will post that on this thread. I and sure you would be welcome to stay at Jim's if you would like to make the trip and check it out.



trseven
Gerry Conant
Council Bluffs Iowa
(6 posts)

Registered:
11/05/2012 04:07PM

Main British Car:
1980 Triumph TR7 Stock 2.0

authors avatar
Re: TR7 LexusV8 conversion
Posted by: trseven
Date: April 14, 2015 12:45PM

Dan,
Sounds like fun and I really wish I could drive down there and check it out! Spent 10 years in the Navy and a lot of that in Norfolk, VA. Drove interstate 64 many a time traveling home on leave. West Virginia was the most scenic part of the drive! I've got a long list of projects myself! Mostly remodeling the 115 year old house we live in plus a 7 and 10 year old daughters keeping me busy. My TR7 needs paint! I have a friend from our local club thats been letting me use his place and spray gun. I asked him about buying a spray gun and he said why, I have one right here! Great people British car owners!


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: May 01, 2015 11:54AM

I plan to be in Florence, KY tomorrow, Sunday and most of Monday. We hope to make good progress on the TR7. Steve is probably there already working on the Chump car


Scott68B
Scott Costanzo
Columbus, Ohio
(462 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: TR7 LexusV8 conversion
Posted by: Scott68B
Date: May 01, 2015 01:44PM

Good to hear Dan! What are the odds of it making Indy? Any chance at all?


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: May 01, 2015 02:36PM

Depends on how it goes this weekend. Hopeful.


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: May 03, 2015 08:59AM

Dan's TR7 LexusV8.JPG
Progress made yesterday. We have all the coolant connections made. Jim welded up several holes in the intake plenum that we decided we did not need.
After sorting wiring in the valley, we installed the intake. Bled the clutch. Sorted some wires.
Had to pull the radiator again to trim around the hose connections.



Edited 2 time(s). Last edit at 05/04/2015 08:37AM by MGBV8.


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: May 04, 2015 02:03PM

image.jpg
Not much action to see. We were cutting up two old harnesses and evaluating the wiring situation. Here you can see wires that have been pulled and labeled. I ordered the connectors and relays we need.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5153 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: TR7 LexusV8 conversion
Posted by: BlownMGB-V8
Date: May 05, 2015 07:51AM

Also, the MS is mounted using a slick plastic slide-in mount we created and the harness is routed to the engine. We have to match the MS leads to the Lexus ones and make the required configuration changes, meaning we need to know more about the Lexus electrical complonents.

Jim


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: May 27, 2015 11:14AM

No dice for indy for this one either. I just don't have free time to get to Florence before the meet.



Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: November 24, 2015 04:04PM

We finally got schedules together and were able to have another work weekend at Jim's place. I missed the one in August, so no work was done on the TR7 then, but we got some time in on it Saturday and Sunday. Wiring up the 1uz with megasquirt began. A fuse box and relays were mounted inside the engine bay, the injector were wired using canniballized pigtails from two 1uz harnesses. I had bought injector plugs and adapters (just in case) and neither would fit! We spent a good bit of time and effort tracing stuff and figuring out connections. Now I have a new list of things to get ready for the next time.


Scott68B
Scott Costanzo
Columbus, Ohio
(462 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: TR7 LexusV8 conversion
Posted by: Scott68B
Date: November 25, 2015 10:50AM

Hey Dan!

Glad to see you making some progress! What's left to do? You have to be getting fairly close?


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: November 27, 2015 09:24AM

Making progress, Scott. True to form, Jim has provided the car with several nifty customized parts. Nothing like his B, but cool nonetheless. He made up ends for the battery cables using copper tubing on Saturday, and a stainless steel mount for the fuse box. We could possibly get it to run on my next visit. Many loose ends though.


Dan B
Dan Blackwood
South Charleston, WV
(850 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: TR7 LexusV8 conversion
Posted by: Dan B
Date: April 27, 2016 09:28AM

We decided to go with wasted spark using the Ford EDIS 8 setup with two coil packs. This required customizing a trigger wheel and replacing the 12 tooth wheel so we can utilize the stock pickup. Toyota makes a 36-2 trigger for a Tundra motor, so I bought a new one of those. This past weekend, Jim welded two teeth back on to make a 36 tooth wheel. The pickup is 50 degrees from TDC, so the tooth in that position was removed. I will post pictures of that this evening. We also made custom mounts for the Ford coils. It was hard to find a suitable location. Carl, Steve and I tried several positions. I want to keep the battery up front so I have trunk space but considered changing that idea, but finally decided on a location opposite the throttle body. Since wires from each four pack have to go to both sides of the 1uz this makes the cable runs for spark plug wires as short as they can be. Custom spark plug wires will have to be made regardless.


bsa_m21
Martin Rothman
Vancouver, Canada
(194 posts)

Registered:
01/06/2009 11:41AM

Main British Car:
1980 TR7V8 Rover 3.9L

authors avatar
Re: TR7 LexusV8 conversion
Posted by: bsa_m21
Date: April 27, 2016 03:50PM

You might want to do similar to my battery relocation, if you are going with a single exhaust pipe system. I built a recessed box into the lower right corner of the rear trunk and got a small, hi-capacity battery to fit. It's flush with the regular trunk floor and works fine. Here is the only pic I could find at the moment, from part way through the build back on 2012.

P1000426-1200.jpg

As can be seen, the box extends to the frame rail. The bottom follows the lower curve of the body panel, so I made a small sub-frame to match with a level top for the battery to sit on. I added a drain hole at the lowest portion of the box and sprayed the inside with a rubberized coating, just in case anything leaks. :)

Unfortunately, this is not a solution if you plan to go with dual exhaust pipes, as the box takes up the space. where the muffler would be.

Regards,

Martin
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