Timing - Marina 1275 engine.

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Timing - Marina 1275 engine.

Postby ndevans » Fri Jun 09, 2017 10:37 pm

Evening.

What cylinder is a Marina 1275 engine timed on? I can't get mine to fire. Assuming No. 1 is the distributor lead nearest the bottom of the distributor, with the leads connected 1-3-4-2 it won't fire.
I have set the timing so the points open at about 8 degrees, just as no. 1 is coming up to tdc. Being a Marina engine, the timing marks are in a different place, at about 11 o'clock on the timing cover instead of 6 o'clock. This made me wonder is the Marina engine timed on no. 2 or 3 cyls?

Cheers N
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Re: Timing - Marina 1275 engine.

Postby Custard » Fri Jun 09, 2017 10:45 pm

Still timed on number 1.

Just make sure it is on the firing stroke, i.e. both rockers rocking and put the leads in the cap according to where the rotor is.

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Re: Timing - Marina 1275 engine.

Postby ndevans » Sat Jun 10, 2017 6:27 am

Ok thanks.
I had no. 1 plug out and turned the crank until I could feel pressure under my thumb - that's the firing stroke isn't it?

Cheers N
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Re: Timing - Marina 1275 engine.

Postby Custard » Sat Jun 10, 2017 9:22 am

Yes should be as 4 would have a valve open on the exhaust stroke so no pressure.

I just tend to have the rocker cover off and check the valves, but either way works.

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Re: Timing - Marina 1275 engine.

Postby ndevans » Sat Jun 10, 2017 5:33 pm

Ta.

Spare distributor successfully installed. Car now much improved-picks up much better, and seems to have more power at speed too. I can feel the acceleration at 70mph now!

Separate question-does exhaust wrap do anything to quieten a noisy exhaust? I have an LCB 3 branch stainless exhaust manifold, and it seems a little noisy.

cheers N
N D Evans
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MOG STATUS:- IN SERVICE
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Re: Timing - Marina 1275 engine.

Postby Custard » Sat Jun 10, 2017 9:42 pm

Not sure.

I put it on my kit car as protection for pedestrians as it was on the outside of the car and only the silencer had a guard.

I have it on my Moggy, down to the silencer, to keep the heat in the exhaust and not have it warming the carb.

It also made it look a little nicer as I had pieced together my own manifold.

I don't think it made much difference to noise.

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