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Author Topic: Aluminum head  (Read 6585 times)

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Offline Brian M

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Aluminum head
« on: October 26, 2017, 12:09:26 PM »
Hi, I thought people might be interested to see this, from what I hear it is quite rare. I haven�t got to run it yet but hopefully soon.
« Last Edit: January 23, 2018, 12:01:55 PM by johnrb3b »
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Offline RICKG

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Re: Aluminum head
« Reply #1 on: October 26, 2017, 12:42:10 PM »
WHERE IN TH HECK DID YOU FIND THAT???
Very cool, what's the lettering spell out?
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Offline Brian M

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Re: Aluminum head
« Reply #2 on: October 26, 2017, 02:00:12 PM »
It�s a Brian Chuchua head, Chuchua is what the lettering says. I got it 20 years ago from a guy I worked with, I thought it was cool so I bought it for $100. Recently I found out it is a high compression head so I dug it out and fixed it up and decided to put it on while I�m fixing a bunch of other stuff. Should go well with my Clifford cam and header, the 32/26 Weber and distributor recurve.
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Offline mtnman37879

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Re: Aluminum head
« Reply #3 on: October 26, 2017, 11:25:31 PM »
That is just tooo coool! Vintage speed parts rock!
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Offline Holdmybeer

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Re: Aluminum head
« Reply #4 on: January 16, 2018, 05:54:41 PM »
There is no sufficiently superlative term to describe the coolness of this head!
You Yankees have all the fun toys.
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Offline Brian M

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Re: Aluminum head
« Reply #5 on: January 23, 2018, 02:15:23 AM »
It is pretty cool, I have it all running now and it seems to work well. It runs very well down the freeway, had the needle off the end today getting in front of a semi. It�s hard to say if it�s just the head though, I did a few other things that probably helped too.
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Offline johnrb3b

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Re: Aluminum head
« Reply #6 on: January 23, 2018, 11:59:51 AM »
More, more.
Tell us more.
And pictures.

Also, I assume that head was sand cast. So where is the pattern????
Someone could make more if he had the pattern.
« Last Edit: January 23, 2018, 12:03:34 PM by johnrb3b »
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Offline Brian M

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Re: Aluminum head
« Reply #7 on: February 01, 2018, 01:46:43 AM »
I don�t really have much info, Vic Hickey originally designed them and then Brian Chuchua continued on with them, as for a pattern or mold I�m sure they are long gone, this head was probably built 50-60 years ago. I�m thinking about starting a build thread about the work I�ve done and things that will be coming, maybe some people would be interested.
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Offline Holdmybeer

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Re: Aluminum head
« Reply #8 on: April 01, 2018, 12:27:54 PM »
I am totslly interested.  In fact, Ive been meaning to drive the west coast highway soon with my partner.  Maybe we could stop by for a visit?
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Offline Brian M

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Re: Aluminum head
« Reply #9 on: April 24, 2018, 01:43:02 AM »
That could be fun, let me know if you make it down this way.
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Offline Brian M

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Re: Aluminum head
« Reply #10 on: April 24, 2018, 01:49:24 AM »
I�ve driven the Jeep 1,000 miles now. Had a problem about 400 miles in, burnt a valve. I thought it was running lean so I installed a wideband sensor to tell for sure and for the most part I really wasn�t. I actually think the spark plugs were too long, I was running 1/2� reach plugs but with the higher lift cam I actually had 2 spark plugs barely touching the valves and I think it was causing the problem, I pulled it back apart and fixed the valve and also went back the 3/8 plugs and so far no problem. I�ve been messing with the jetting quite a bit but needed more air correction jets for the Weber so I�m currently waiting on those. I will say the Jeep is a goer though, at least for an old Jeep flathead.
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Offline aboyandhisdog

Re: Aluminum head
« Reply #11 on: April 24, 2018, 12:40:43 PM »
Well, you can usually rely on me for a dumb question. :-?  What are the symptoms of a burned valve?  What problems were you having?

Also, which Weber carb. do you have and will it bolt right up to the stock Willys intake manifold?  Is it an option to the WO or the Solex for us?

Thanks!
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Offline Steve R

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Re: Aluminum head
« Reply #12 on: April 24, 2018, 07:02:03 PM »
I "second that emotion" as they used to say. Tell us more. Many of us want to keep the old engine but want more power. At least 20 or so HP..
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Offline Brian M

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Re: Aluminum head
« Reply #13 on: April 26, 2018, 02:18:55 AM »
Quote
Well, you can usually rely on me for a dumb question. :-?� What are the symptoms of a burned valve?� What problems were you having?

Also, which Weber carb. do you have and will it bolt right up to the stock Willys intake manifold?� Is it an option to the WO or the Solex for us?



Thanks!
The burnt valve started out as a small miss that I couldn�t get to adjust out with the idle mix screw, eventually it got worse until you could feel the Jeep actually moving up and down. At that point I started pulling plug wires while it ran and found out #1 cylinder wasn�t doing much work, the exhaust valve was leaking.

I run a 32/36 Weber. You can buy a kit that is for the Jeep that has an adapter to fit the stock manifold but I thought it was pretty cheesy so I built a new manifold.
« Last Edit: April 26, 2018, 02:21:52 AM by ducatibrian »
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Offline Brian M

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Re: Aluminum head
« Reply #14 on: April 26, 2018, 02:25:10 AM »
Quote
I "second that emotion" as they used to say. Tell us more. Many of us want to keep the old engine but want more power. At least 20 or so HP..

I�m not sure you can get 20hp even with what I�ve done, I saw a guy dyno his Jeep with and without another head like mine and he went from 40-47, that�s probably the biggest gain you will get.
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