DeTomaso Mailing List: April 1997, Message #166
     



From: "D.Jones" <m203253@ws2200.mdc.com>

Subject: 4.6 Liter DOHC - reply

Date: Fri, 18 Apr 1997 17:40:24 CDT



Dave,



You may want to check out the SAE paper on the road race development

work done on the 4.6L DOHC engine.  It's SAE 942474, written by Dan

Yerace (Ford) and Dennis Corn (Roush Industries).



Here's a quote you may find relevent:



"Using the TOR Chart projections, the production 4.6L 4-Valve Modular

Engine was evaluated to determine what parts needed to be improved for

the program.  Production design engineers indicated that many of the

parts were designed for maximum output levels of 100 BHP/L. Since

desired output levels were in the range of 130 BHP/L, upgrades had to

be incorporated....  At the conclusion of the analysis phase,

components requiring modification and redesign were identified."



Later,

Dan Jones



> Hidee-Ho neighbors,

>      I've wanted to do a 4.6 L swap in my Pantera and think that it's a good

> choice for a buildup. Although the 3.554 bore and 3.55 stroke make for a

> square "torquer" motor,  the crank sits high into the block yielding

> increased rigidity(similar to the old Ford FE series of motors). A Cobra DOHC

> motor is all aluminum giving a weight advantage; the motor also comes with a

> forged crank. I am planning on twin turbo charging the motor the future,  the

> stock cracked metal rods and hypereutectic pistons will need to be replaced.