What I've been up to this winter

[Darrell_Walker]

I've been working on installing dual Weber DCOEs on my TR4A. Along with that project, I installed a Denso mini alternator, gear reduction starter, Mallory distributor with Pertronix, and electric fuel pump. I was going to also install an MSD unit, but I'm not so sure anymore. Anyone want a good deal on a brand new MSD 6A unit?

Putting on the Webers was something I've wanted to do since I got my first Moss catalog as saw them them on the competition parts page. That was 1981 or so. What finally pushed me was when I went to drive her this past fall (it had been a very busy summer, so it was the first drive of the year, sadly), I started it up and gas was streaming out of both carbs. The jet tubes on both carbs (I have/had SU HS6) had failed again, the third time in about 5 years.

I have everything running, but only with very rough adjustment. I also still need to install the relay and inertial switch for the fuel pump, right now it is wired directly to the ignition. I don't think I really need the relay (the pump is only supposed to draw 3/4 amp max), but I had one on hand.

Here are some pictures:

 

[PeterK]

I really dig that alternator. How much does it put out?

Nice job on everything Darrell. I hope my 4A looks that good when it's put back together.

Are you going to add a fuel pressure gauge on the regulator to dial it in?

 

[Tomster]

Did you do anything to the top and bottom ends of the engine?

 

[Darrell_Walker]

I really dig that alternator. How much does it put out?

Nice job on everything Darrell. I hope my 4A looks that good when it's put back together.

Are you going to add a fuel pressure gauge on the regulator to dial it in?

Thanks, Peter. The alternator is 50 amps. You can get them that size as low as 34, I believe, and up to 60 or so.

I don't plan to install a pressure gauge, unless I think I'm having issues. The regulator is supposed to be pre-set to 2.7 PSI, right where Webers are supposed to like.

 

[Darrell_Walker]

Did you do anything to the top and bottom ends of the engine?

I did a full rebuild about 5 years ago, including:

87.5 mm pistons/liners
complete balance
new aluminum head
narrow belt conversion with harmonic dampner
270 degree cam
roller rockers (stock ratio)
alloy sump
aluminum flywheel

 

[2wrench]

Very nice looking, Darrell.

 

[Brosky]

I always loved TR4's. This reminds me why.

Great job. Thanks for posting the pics.

 

[TR4nut]

Beautiful Darryl-

I noticed on your steering, did you eliminate the rubber couplings? I have to do some rehab on the steering on my TR4 and am curious if there are better options.

Randy

 

[Darrell_Walker]

Beautiful Darryl-

I noticed on your steering, did you eliminate the rubber couplings? I have to do some rehab on the steering on my TR4 and am curious if there are better options.

Randy

Thanks, Randy.

Yes, I replaced the rubber couplings with two of the metal, TR6 couplings. They were pretty much a direct fit. They are just a bit longer than the stock rubber ones, but there was enough adjustment in the sliding part of the column to account for that. Another advantage is that they sit in a different section of the splines, so if yours are a little worn that will help out.

-Darrell

 

[TR4nut]

Another advantage is that they sit in a different section of the splines, so if yours are a little worn that will help out.

Yep, that's the reason for the rehab need, I still have axial play at the rack mount which does concern me.

Randy