DeTomaso Mailing List: May 98, Message #91

Even at low RPMs you will build more torque if the valve opens and closes
faster. Keep in mind that you get less wear with a roller and adjustments
should be required less frequently.

John T.

-----Original Message-----
From: Asa Jay Laughton <asajay@concentric.net>
To: Multiple recipients of list <detomaso@realbig.com>
Date: Friday, May 01, 1998 9:51 AM
Subject: Re: My next rebuild


>I agree with this point, and would also like to make the point I am
>building this engine for low speed driveability as well.  Using the
>hydraulic lifters will gain me a little bit at the low end due to their
>nature of going totally solid until higher r's.  At least, I think I've
>got that right :]
>
>Asa Jay
>
>
>Mary Taphorn wrote:
>>
>> Brent says
>>
>> >Ya,  I would also be interested in info on "hydraulic roller" cams.
>>
>> Hey guys, now see here. If your going to use a roller cam, then use a
solid
>> roller!  A big advantage to a roller is that you can open the valve much
>> faster.  Hydraulic roller lifters are limited by design (oil compression
I
>> think) as to the speed they can rise the rocker.  Solids can lift mucho
>> faster.  More power
>>
>> John T   8^)
>