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Old 08-18-2021, 04:17 PM   #1
Tod
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Default OHV build just about wrapped up.
Just about there on the first OHV build. Not my build, just the first aluminum OHV head.


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Old 08-18-2021, 07:34 PM   #2
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Yum
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Old 08-18-2021, 08:40 PM   #3
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Default Re: OHV build just about wrapped up.
Green, please!

Also,that engine stand adapter looks pretty slick.
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Old 08-19-2021, 12:26 PM   #4
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Default Re: OHV build just about wrapped up.
Is the block one of yours as well?
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Old 08-19-2021, 01:57 PM   #5
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Default Re: OHV build just about wrapped up.
Awesome work Todd!!
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Old 08-21-2021, 06:45 AM   #6
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It has been fired up but the video will not post. You can see it on my Facebook page if you want. It is also on the Facebook page for MAFCA.


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Old 08-22-2021, 10:01 AM   #7
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Default Re: OHV build just about wrapped up.
Here is a Youtube link to the video.


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https://www.youtube.com/watch?v=7DJVscXVRyg
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Old 08-23-2021, 01:50 PM   #8
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Default Re: OHV build just about wrapped up.
Tod,

That looks and sounds very nice. Are you able to share details about the build?

Thanks,

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Old 08-23-2021, 05:13 PM   #9
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Default Re: OHV build just about wrapped up.
Love it. What cam is it running?
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Old 08-23-2021, 05:42 PM   #10
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Default Re: OHV build just about wrapped up.
where and how is the overhead cam being driven???
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Old 08-23-2021, 06:02 PM   #11
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Default Re: OHV build just about wrapped up.
It doesn't have an overhead cam

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where and how is the overhead cam being driven???
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Old 08-23-2021, 07:22 PM   #12
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Default Re: OHV build just about wrapped up.
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where and how is the overhead cam being driven???

Model A OHV conversions usually replace the old valves with pushrods, so the cam stays where it is.
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Old 08-23-2021, 08:35 PM   #13
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Default Re: OHV build just about wrapped up.
Most overheads are rocker arm type, not all.

Some are DOHC

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Old 08-23-2021, 09:24 PM   #14
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Default Re: OHV build just about wrapped up.
What engine is that with the dual overhead cams? There are two cam lobes per cylinder on each side and 4 ports shown on the near side.
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Old 08-23-2021, 10:16 PM   #15
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What engine is that with the dual overhead cams? There are two cam lobes per cylinder on each side and 4 ports shown on the near side.
That is a CREE 16 valve DOHC on a Model "B" block.

The sister motor holds several records at Bonneville and El Mirage.

It is not for the faint of heart.

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Old 08-23-2021, 11:10 PM   #16
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Default Re: OHV build just about wrapped up.
Are they a recent build? Looks like lots of billet machine work there.
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Old 08-24-2021, 12:26 PM   #17
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Default Re: OHV build just about wrapped up.
Bick,
fairly recent, yes chain housing is from billet
all else castings from '70-ish
Earlier versions known as Bee-Jay from the late Bruce Johnson.
If I remember correctly, the original patterns came in from Australia, maybe McGee?

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Old 08-24-2021, 10:33 PM   #18
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Default Re: OHV build just about wrapped up.
Thank John.
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Old 08-24-2021, 11:24 PM   #19
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Default Re: OHV build just about wrapped up.
>>If I remember correctly, the original patterns came in from Australia, maybe McGee?

Looks a bit flash to come from Oz in the 70's. There was a Riley repo head sold by Andy Jenkins without rockers at that time and the patterns ended up in the US.
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Old 08-25-2021, 09:57 AM   #20
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>>If I remember correctly, the original patterns came in from Australia, maybe McGee?

Looks a bit flash to come from Oz in the 70's. There was a Riley repo head sold by Andy Jenkins without rockers at that time and the patterns ended up in the US.
Andy was here in the states a few years ago and we had quite a little chat at Bonneville. We spoke about the Jenkins head design and the technology progression over the years. Very nice chap, a gentleman to be sure.

I did a little research on the Bee-Jay head, the original patterns did come from McGee. In fact, the original ports were laid out as intakes on the right, ex on left. One of the first changes was to reverse this.

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