OHC-6 TECH Over Head Cam projects, questions and advice.

          
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  #21  
Old 11-25-2011, 09:13 PM
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Maybe this would work?
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  #22  
Old 11-26-2011, 10:55 AM
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Originally Posted by 67 Lamnas View Post
Maybe this would work?
Don't think just one dollar would do the job.

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  #23  
Old 11-28-2011, 09:13 PM
66sprint6 66sprint6 is offline
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Maybe this would work?
Just one for the whole engine, I guess.

  #24  
Old 12-07-2011, 09:55 PM
BruceWilkie BruceWilkie is offline
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Friction reduction through coatings may be the more practical alternative. Valve tip, follower, lash adjuster and cam lobe. In fact rocker ratio isnt much an issue if you can have a cam made from steel and then treated with right coating.(simply grind the lift curve you need) Not hard to make a hydraulic lash adjuster solid and adjustable.


http://www.swaintech.com/store.asp?pid=10910

Jack some of your valvetrain answers may be in your "backyard"!

  #25  
Old 12-08-2011, 03:13 AM
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Thanks, Bruce- I'll keep the coatings in mind.

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  #26  
Old 07-02-2012, 11:51 AM
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Default Rollerized Cam Followers

Hello All

I know that this is a very old thread but here goes.

You don’t have to make them they already exist, dare I say it?

The FORD 2.3L (2300cc) Pinto, Ranger, T-bird Etc; Engine already has them.

The Ford lash adjusters are the same diameter as the OHC 6 ones are, but they are much shorter overall, will have to make a accurate spacer to go below them so that the geometry will be right. You may also have to slot the bore of the lash adjuster to get oil up to it from the oil galley in the head.

The hard part is the CAM, it has to be custom made of 8620 STEEL Billet (BLANK CAMS, THEY STILL HAVE TO BE GROUND YET, ANOTHER $7-800.00 EACH)

I have 2 of the BLANKS that I had made a few years ago they cost me $1400.00!

The Stock Cam will not live under the pressure of the roller for very long, the roller will roll itself into the cam lobes during operation.

Check out my efforts to rollerize the Ol’e Cammer at the below site.

http://www.geocities.ws/ohcjhatch/index.htm

Lots of WORK and MONEY

Hope this Helps

Take Care,

Dusty

  #27  
Old 07-02-2012, 12:25 PM
Tim john Tim john is offline
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BMFH, very interesting link, well done. Are you still running this OHC engine in your boat and if so, how has it held up? Has it met or exceeded your expectations ? What would you do differently with today's knowledge and available technologies ?

Tim john---

  #28  
Old 07-02-2012, 12:40 PM
BMFH BMFH is offline
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Hello

Sadly No, I don't have it in anything now, it is in Storage.

It ran in the Hydroplane it the early 70's as a 230/250, not as the 301 and the billet cam box that my Machinist buddy fabricated before I bought it from him.

The 301 ran 169 MPH on the salt in a 32 Roadster of JD Tones.

I want to put in on the Drag Strip Myself someday!

It was disassembled and Freshened up after they removed from JD's Roadster, NO Problems noted to my knowledge.

A Taller Block might Help, It is Tremendously Torquie?, it has a 1.36 Rod to Stroke Ratio.

JD said it wanted to come around on him at 5000 RPM's on one of the runs. Lots of Torque!

I would Just like to get it in Something and have some fun with it, for now.

Take Care,

Dusty

  #29  
Old 07-02-2012, 01:09 PM
Cammer-6 Cammer-6 is offline
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Quote:
Originally Posted by BMFH View Post
Hello All

I know that this is a very old thread but here goes.

You don’t have to make them they already exist, dare I say it?

The FORD 2.3L (2300cc) Pinto, Ranger, T-bird Etc; Engine already has them.

The Ford lash adjusters are the same diameter as the OHC 6 ones are, but they are much shorter overall, will have to make a accurate spacer to go below them so that the geometry will be right. You may also have to slot the bore of the lash adjuster to get oil up to it from the oil galley in the head.

The hard part is the CAM, it has to be custom made of 8620 STEEL Billet (BLANK CAMS, THEY STILL HAVE TO BE GROUND YET, ANOTHER $7-800.00 EACH)

I have 2 of the BLANKS that I had made a few years ago they cost me $1400.00!

The Stock Cam will not live under the pressure of the roller for very long, the roller will roll itself into the cam lobes during operation.

Check out my efforts to rollerize the Ol’e Cammer at the below site.

http://www.geocities.ws/ohcjhatch/index.htm

Lots of WORK and MONEY

Hope this Helps

Take Care,

Dusty
a smaller lash adjuster offset in the bore would have to be used.
I say start over and fab billet parts with existing rollers and needles.

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  #30  
Old 07-02-2012, 04:42 PM
BMFH BMFH is offline
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Hello All

I am using the OEM Ford 2.3L Follower on my head with the Polycarbonate cover in my link.

I am using it with the Adjusting Screw Centered in the plug that is installed in the lash adjuster bore.

The follower is a little long I agree, I used a profile tip on the valve tip to give a better radius for the follower to rock on instead of a square valve tip. (Look Closely at the Picture of the Profile tip and Cam)

Everything fits together very nicely, the purpose of the adapter/stanchions on top of the head is to mount the cam and relocate it to line up with the Follower Roller correctly.

My machinist buddy and I really liked the idea of having the removable caps on the cam bearings for many reasons. the only down side is that the cover must be fabricated also, but it looks way cool though.

I have put the billet cam blanks inside the OEM housing, since it has SBC cam bearing journals it is allot smaller than the OEM Cam.

All you need to do to use the OEM cover with the 2.3L Followers and the Billet Cam is, cut off the ends of the OEM cover to relocate the Seal and plug/thrust unit, figure how much offset you need in the journals and make an offset cam bearing and install it with the new cam, If you make it precision and two piece then the profile won't get in the way like on the OEM cam Profiles do with the Bearing Journals. This idea was our first idea, but liked the split bearing allot better, and not as much of a hassel, like handling 14 bearing half's all at the SAME TIME, Talk about a frustrating task. Then Weld back on the cut off the ends of the OEM cover to relocate the Seal and plug/thrust unit in their NEW CORRECT LOCATION, doing it slowly so as not to get the new bearings too HOT and damaging them.

I really don't care about the ratio of the Follower, since I am going to grind a one off special cam I can go as WILD as I want to because the Cam Housing Bearing Bores are no longer a limiting factor with the cam profile and lobe lift, I can have as much lift as Physically possible with all the restraints of the head and valve train.

This way I can use as much OFF THE SHELF parts as I can, I do like the Polycarbonate cover allot though, after all this work I want people to see my hard work too. Either way I will have to make a ONE OFF Cam, This way I feel that I have less limitations, and Really LOVE the look it gives the Ol'e Cammer.

Anyhow, More food for Thought

Take Care,

Dusty


Last edited by BMFH; 07-02-2012 at 04:57 PM.
  #31  
Old 07-15-2012, 07:48 PM
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Interesting read Ill be following.

  #32  
Old 07-17-2012, 02:37 AM
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BMFH- thanks for posting; I still need to spend more time reading it all.

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  #33  
Old 08-25-2012, 03:09 PM
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Half-Inch Stud Half-Inch Stud is offline
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More Food For Thought. Heck this requires action.
This is the way forward for DESMODROMIC OHC-6 :

http://www.youtube.com/watch?v=LJFj6...e_gdata_player

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