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Old 12-14-2017, 02:50 PM   #1
harryc
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Default aluminum head

Is anyone making a relatively low compression (6:1) or less aluminum head ? of any style? Cast iron heads are getting to be too much for the back at my current state.-------thanks
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Old 12-14-2017, 03:40 PM   #2
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Default Re: aluminum head

The price may make your back feel better: http://www.millerhi-speedheads.com/products.html
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Old 12-14-2017, 03:58 PM   #3
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Default Re: aluminum head

How often are you removing heads? You could always use an engine hoist to remove them and move them to a work bench or at least chest high for optimal carrying.
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Old 12-14-2017, 04:00 PM   #4
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Default Re: aluminum head

Tod is making alluminum heads. Do a search on this forum for Tod.

Also Snyder has an aluminum head:
http://www.snydersantiqueauto.com/th...mpression-head

Here is a winfield aluminum head in 6:1 or 7:1
http://www.reds-headers.com/html/mod...ine_parts.html
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Old 12-14-2017, 04:01 PM   #5
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Default Re: aluminum head

6.5:1 too high?

http://www.secretsofspeed.com/lion-speed-head
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Old 12-14-2017, 05:33 PM   #6
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Default Re: aluminum head

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I have wanted to up the compression on my stock A speedster, but I am worried about knocking the bottom end out of it.
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Old 12-14-2017, 08:12 PM   #7
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Default Re: aluminum head

Quote:
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https://m.youtube.com/watch?sns=em&v=qg0T4ubdw_M

Vid of one being CNC machined.
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Old 12-14-2017, 08:23 PM   #8
glenn in camino
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Default Re: aluminum head

I have a 7-1 Thomas head on one model A that has a modified B engine. So far, I love it.
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Old 12-14-2017, 08:34 PM   #9
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Default Re: aluminum head

wow, just went through all those speed websites and I want my wife to ignore the debit card bill for a while
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Old 12-14-2017, 10:27 PM   #10
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Default Re: aluminum head

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Originally Posted by Beater View Post
I have wanted to up the compression on my stock A speedster, but I am worried about knocking the bottom end out of it.
Why? is your engine tired?
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Old 12-15-2017, 05:11 AM   #11
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Default Re: aluminum head

Snyders has a good selection.
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Old 12-15-2017, 12:22 PM   #12
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Default Re: aluminum head

It's not high compression that causes babbitt problems, it is detonation. I ran a 7.4:1 Cyclone head for years with no problems.
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Old 12-15-2017, 12:51 PM   #13
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Default Re: aluminum head

Is there a stock looking aluminum head being made?

Also, do any of the heads mentioned above use stock sized plugs?
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Old 12-15-2017, 01:41 PM   #14
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Default Re: aluminum head

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Is there a stock looking aluminum head being made?

Also, do any of the heads mentioned above use stock sized plugs?
Tod makes a stock looking aluminum High Compression head. I think Hard Times got one of the first ones.

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Old 12-15-2017, 02:33 PM   #15
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Default Re: aluminum head

In the 60's and 70's I ran an original Thomas 8.25 aluminum head on an old worn out babbitt Model A engine.

Dwayne Helms here in Denver runs a 12.0 to 1 Cooke head on a babbitt engine.

Last edited by Benson; 12-15-2017 at 03:18 PM.
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Old 12-15-2017, 02:42 PM   #16
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Default Re: aluminum head

So how did that work for you

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Old 12-15-2017, 02:49 PM   #17
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Default Re: aluminum head

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Why? is your engine tired?
well ive not had the bottom end apart but it runs smooth and fine doesn't burn oil makes no knocking sounds

I was under the impression that higher comp was very hard on the bearings so haven't done it would like to however
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Old 12-15-2017, 03:04 PM   #18
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Default Re: aluminum head

the reason I specified 6:1 or less was to maybe reduce oil consumption. I really don't know but it would seem that a higher compression would tend to inhale more oil past the rings on the intake stroke-- that was my thought anyway.
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Old 12-15-2017, 04:47 PM   #19
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Default Re: aluminum head

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Originally Posted by harryc View Post
the reason I specified 6:1 or less was to maybe reduce oil consumption. I really don't know but it would seem that a higher compression would tend to inhale more oil past the rings on the intake stroke-- that was my thought anyway.
I would think tht would make no difference at all compression has nothing to do with the intake stroke while the valve is open
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Old 12-15-2017, 05:06 PM   #20
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Default Re: aluminum head

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Originally Posted by California Travieso View Post
Tod makes a stock looking aluminum High Compression head. I think Hard Times got one of the first ones.
Thanks for your reply. Any idea of how I go about buying one? Does Tod have a website?
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