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Forum locked  This topic is locked, you cannot edit posts or make further replies.  [ 9 posts ] 
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PostPosted: Mon Apr 29, 2002 4:23 pm 
I have a basic built up slant, 60+ off the head 4bbl/headers, ISKY cam.

Now i went out and got a set of MP "oversized" /6 valves. And I was bumbed out when i held them up to a stock one. I didnt do my research...
These are 1.7" intake (stock is 1.62) and 1.44 exst (stock 1.36). Is such a small diffreance in valves even going to be noticable? I already powered this head...was just going to pull it again to put these in.


cralt@broke.for.now


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PostPosted: Tue Apr 30, 2002 11:06 pm 
(User Above) wrote:
: I have a basic built up slant, 60+ off the head
: 4bbl/headers, ISKY cam.
:
: Now i went out and got a set of MP
: "oversized" /6 valves. And I was
: bumbed out when i held them up to a stock
: one. I didnt do my research...
: These are 1.7" intake (stock is 1.62) and
: 1.44 exst (stock 1.36). Is such a small
: diffreance in valves even going to be
: noticable? I already powered this head...was
: just going to pull it again to put these in.


Ten years ago I removed my head and installed the same valves. I did some small port work and set the head back on the engine. It ran about .250 faster. So I guess it was worth the money. I still used that same valve on last years race engine which ran a 12.120 @ 108 MPH. The only reason I am removing them is because I need more installed height for the new cam.

damuel@kalama.com


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PostPosted: Wed May 01, 2002 12:53 am 
(User Above) wrote:
: I have a basic built up slant, 60+ off the head
: 4bbl/headers, ISKY cam.
:
: Now i went out and got a set of MP
: "oversized" /6 valves. And I was
: bumbed out when i held them up to a stock
: one. I didnt do my research...
: These are 1.7" intake (stock is 1.62) and
: 1.44 exst (stock 1.36). Is such a small
: diffreance in valves even going to be
: noticable? I already powered this head...was
: just going to pull it again to put these in.


A 225 needs all the head flow help it can get, these valves and a pocket port job will make a difference.
DD


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 Post subject: Hey Dave, info for you
PostPosted: Wed May 01, 2002 10:47 am 
Hi Dave,

I've got one of the MP ported heads that they made a while ago. I suspect it uses the same valves. While searching for more installed height for a new cam, I used Hughes Engines offset retainers to install their double spring at about 1.80 (have not measured it yet) on these valves. I am using Mark Goodman's roller rockers and have enough room above the retainer.

If you (or anyone else) want details (part numbers) let me know.

regards,
mark


mldingba@rockwellcollins.com


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PostPosted: Wed May 01, 2002 6:50 pm 
The "fast" race cars dont use valves much bigger than that.

Will
(User Above) wrote:
: I have a basic built up slant, 60+ off the head
: 4bbl/headers, ISKY cam.
:
: Now i went out and got a set of MP
: "oversized" /6 valves. And I was
: bumbed out when i held them up to a stock
: one. I didnt do my research...
: These are 1.7" intake (stock is 1.62) and
: 1.44 exst (stock 1.36). Is such a small
: diffreance in valves even going to be
: noticable? I already powered this head...was
: just going to pull it again to put these in.



slantsix@netzero.net


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PostPosted: Wed May 01, 2002 8:27 pm 
(User Above) wrote:
: Hi Dave,
:
: I've got one of the MP ported heads that they
: made a while ago. I suspect it uses the same
: valves. While searching for more installed
: height for a new cam, I used Hughes Engines
: offset retainers to install their double
: spring at about 1.80 (have not measured it
: yet) on these valves. I am using Mark
: Goodman's roller rockers and have enough
: room above the retainer.
:
: If you (or anyone else) want details (part
: numbers) let me know.
:
: regards,
: mark


Regards Mark ?? Not sure about that statement ?

I also have a set of Mark Goodman's rocker arms. They have been used now for four seasons and still look like brand new. For the new engine I will using a set of Comp. Cams retainer that have .050" more installed height. Now I can't wait to try this new engine out.
:
:)


damuel@kalama.com


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PostPosted: Thu May 02, 2002 11:49 am 
Where do you get the Goodman rockers?
RJ

rj@flyingcamel.net


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 Post subject: Rocker Arms
PostPosted: Sat May 04, 2002 8:47 pm 
(User Above) wrote:
: Where do you get the Goodman rockers?
: RJ


I bought mine from Mark about 4 years ago? I think ?? I payed around $450 ?? Lots of info huh?


damuel@kalama.com


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PostPosted: Sat May 25, 2002 6:35 am 
I just went to my local Mopar dealership, looking for the oversize valves. He said they were 'NS1', which means no longer available. So, are they available somewhere else?
(User Above) wrote:
:
: I have a basic built up slant, 60+ off the head
: 4bbl/headers, ISKY cam.
:
: Now i went out and got a set of MP
: "oversized" /6 valves. And I was
: bumbed out when i held them up to a stock
: one. I didnt do my research...
: These are 1.7" intake (stock is 1.62) and
: 1.44 exst (stock 1.36). Is such a small
: diffreance in valves even going to be
: noticable? I already powered this head...was
: just going to pull it again to put these in.



fglmopar@aol.com


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