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Model A head bolts


Bob1942
05-28-2007, 05:55 AM
Nice to see a MODEL A FORD FORUM on here :grinyes: MY THANKS to AF Administrator IGOR ? My Model A is a 1929 Phaeton "Lulabelle"...The Engine "Blew" :shakehead about a month ago :uhoh: and I am waiting for a rebuilt engine to arrive...:) I was wondering about " BREAK IN " Should I do anything special ? and for how long ? I have coming what they call a "Touring engine " With counterbalanced crankshaft , Touring grind camshaft , Lightened flywheel and insert bearings ...I am keeping the standard Head . THANKS! BOB

Mike V. Florida
05-28-2007, 11:30 PM
Wow, you go through all the time, trouble and expense of a "touring" engine and you keep the original head?

Anyway any good rebuilder will give you instructions on how to break in and seat everything. I would (and have) run the engine for just a few miles to bring the engine up to temp and then change the oil. This, while it might seem like a waste, will help insure that all the debris that might be left after the machining will be flushed out since the Model A does not have a filter.

Next, just run the engine at various speeds never staying at one speed too long so the pistons will seat properly (about 500 to 750 miles).

Bob1942
05-29-2007, 12:30 PM
Wow, you go through all the time, trouble and expense of a "touring" engine and you keep the original head?

Anyway any good rebuilder will give you instructions on how to break in and seat everything. I would (and have) run the engine for just a few miles to bring the engine up to temp and then change the oil. This, while it might seem like a waste, will help insure that all the debris that might be left after the machining will be flushed out since the Model A does not have a filter.

Next, just run the engine at various speeds never staying at one speed too long so the pistons will seat properly (about 500 to 750 miles).

THANKS Mike : Just the info I need ...I find the stock engine to have plenty of power for me and my kind of driving so I am not changing the head and its another (almost) $300.00 ... I am after long engine life and smooth operation ...The rebuilder says he should ship the engine to me within two days ...BOB

Mike V. Florida
05-30-2007, 08:57 PM
A high compression engine will lower the operating temp and increase MPG about 10 to 15% (at least it did with mine) I went from about 18 to about 21 MPG.

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