Recent content by Cajun

I had a similar issue. The temperature as measured by Fluke IR meter was about 152 F. I talked with a professional rebuilder and he saw no issue with this on a newly rebuilt rear end. I check a modern truck and had similar temperatures. I decided to drive it and so far (1500 miles) all is well.

TK I am running a Dan 4 Banger pump. When cold it runs at 50-60 psig. I have to let the oil warm up before an serious RPMs. When he sold me the pump, he insisted on a Thomas valve cover because of the flexing. Can you tell me more about the relief valve you are using? I have a smaller...

Checking compression with the throttle open will give you a close guess on the compression ratio. Data from F.A.S.T. Magazine Ratio PSI 4.6 69 4.8 73 5.0 77 5.2 81 5.4 85 5.6 90 5.8 95 6.0 100 6.2 105...

We did not know what the problem was until we pulled the engine. The loud thumping sounded like it was coming from the middle of the engine. We thought it was a whole lot worst than it was.

We had a choice of the engine or the transmission plus rear end. We chose engine. Both are a PITA.

Another place to look is in the flywheel area. We experience this when a alignment pin fell out on the flywheel.

I installed a Lion head with breathing improved by Piranio's. It replaced a Thomas head. Performance improvement was impressive as compared to the Thomas. Zero to 50 acceleration was reduced by 1 second. On the negative side-the water pump impeller clearance was not as good as standard Model...

Be careful of the 2 head studs on the water outlet. The Thomas head is a bit thick and sometimes the studs do not have many threads in the block.

When you open the idle screw, I think you are adjusting the air flow at idle not the fuel flow.

Most Great Race rally cars run with a very accurate speedometer which you calibrate over a 10 mile or so course daily. It uses a magnetic pickup on a front wheel. I have experience doing this with Coker Excelsior radials in both 16 and 19 inch size. The 19 inch 600R19 radial will run 5.5%...

Go to Coker.com and you can get the circumference of each size.

It will pull twice the amps. I suspect it will burn up if it honks.

Are you able to run with 50% antifreeze? I have a similar set up with the smaller pulley. My speedster overheats with 50% antifreeze. Radiator etc is clean. Evidently the head casting has too much space around the impeller. It has been suggested that the stock pulley would solve my issues...

I see that you are using a Lion head. Do you have the standard crank pulley? Or have you moved to the smaller diameter Riley billet pulley?

I installed a Dan-4-Banger oil pump on my B engine. It runs at 60 psi cold and then drops down to 38-40 when warm. It has a Butz rear seal and a modern front seal. There are NO leaks. I would look into the front seal. There are several types of "modern front seals".