Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


roverman
Art Gertz
Winchester, CA.
(3061 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

3 Valve Coyote Valvetrain
Posted by: roverman
Date: September 23, 2020 11:36AM

Anyone familiar with these ? I'm using the , finger roller rocker and dead-end hydraulic lifter/rocker pivot. I measure .815" pivot centerline to roller centerline and likewise to valve tip center line. My math suggest a 2 to one ratio ? In other words, .200" at the lobe would produce .400" at valve tip.
Thoughts ? Thanks, Art.


mgb260
Jim Nichols
Sequim,WA
(2061 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 3 Valve Coyote Valvetrain
Posted by: mgb260
Date: September 23, 2020 11:48AM

Art, Are you looking at the pre-Coyote 5.4 Triton? Coyote were all 4 valve.


roverman
Art Gertz
Winchester, CA.
(3061 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: 3 Valve Coyote Valvetrain
Posted by: roverman
Date: September 23, 2020 04:57PM

According to Comp. Cams, Coyote 3 valve. They claim rocker ratio at 1.825/1. Hyd. roller cams to 6.800 rpm. but only .450" lift, int./ehx. I'm using a 2.05" int. Not enough lift. i think I'm designing/building a 3 cyl. Buick ? Buick V6 Stg II head, so why not ?
Art.


mgb260
Jim Nichols
Sequim,WA
(2061 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 3 Valve Coyote Valvetrain
Posted by: mgb260
Date: September 23, 2020 05:23PM

Art, Pontiac had a slant four/half of a V8!


roverman
Art Gertz
Winchester, CA.
(3061 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: 3 Valve Coyote Valvetrain
Posted by: roverman
Date: September 23, 2020 07:04PM

Yep, had one in my 62' Tempest convertible. 3.2L, shook like a 180 crank in a big v8 ! Motor mounts were like pools of jello. They did a good job, but motor shook so much, made a permanent stutterer, out of 1bbl. carb./lol.
This sort-of Buick. 3 cyl. is for a 800 lb., all-aluminum car. We know how I like aluminum-right ?
I need a on rear wheel transaxle. Snow mobile or one of those 3 wheel cars ?
Onward, Art.


Jim Stabe
Jim Stabe
San Diego, Ca
(771 posts)

Registered:
02/28/2009 10:01AM

Main British Car:
1966 MGB Roadster 350 LT1 Chevy

authors avatar
Re: 3 Valve Coyote Valvetrain
Posted by: Jim Stabe
Date: September 23, 2020 08:12PM

Art, why don't you ever post pictures of all the bizarre projects you are working on? Inquiring minds want to know.


roverman
Art Gertz
Winchester, CA.
(3061 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: 3 Valve Coyote Valvetrain
Posted by: roverman
Date: September 24, 2020 06:46PM

I think I'm blocked,( in case I'm a contagion)....



Sorry, only registered users may post in this forum.