m&a cyl heads?

[Rosewood T-Type]

Were you using this on a 109 or a 14 bolt motor?

Wow thats F ed up!

 

[protracracing]

that was a 250 ci stage 2 off center motor built by DLS

Dennis

 

[Rosewood T-Type]

I guess its all just random. I'v seen many GN1s look like that and others have seen M&As like yourself So I'd say either or is a crapshoot when your making 600+ RWHP!
Doug

 

[PHILBUILT65]

hey thats messed up. i havent ever seen any that bad before.
ocean the attachment didnt go through if nothing else could i get you to xrox the brochure? i will pay what it takes thanks for the reply

 

[broke1]

How many of you guys have flowed your fully ported M&A's???

I didnt think mine were that impressive on the intake,I think 228@.550,the exhaust was up there at 215@.550,with GN1 valves(1.9,1.6 I think)I know most heads have alot more diff between the int and exh flow....I would think youd want a nice flowing exhaust port for a turbocharged engine?

Fully ported by Champion and flowed by them.Tom told me they would take major $$$ to make em flow well on the intake,the actually flow better than fully ported GN1's on the exhaust...

I know Dan was telling me hes had several sets go 240+ but I would ASSume that is with welding and epoxy....

 

[cruzn57]

well..................

how about 268@500in on the intakes, M&A III,
Zimmerman of course,
reflowed locally slightly less, but wet flowed this time.
we will see what a 109 cam do!!!!!!
pics are to big for here.

 

[broke1]

Do they have any welding or epoxy work done???Whats the exhaust flow?

 

[cruzn57]

no welding, no epoxy

at 500 lift intake was 268
ex was 205

we raised the intake ports ALOT
did some magic porting, (expensive)
flow sheet goes to 650 lift, and we ain't talking about that!
matched the intake, and I'm a happy camper!!

 

[Underboost]

Cruzn57 Pics

 

[cruzn57]

Thanks Brent

someday I'll learn how to do that.
one thing at a time, this week its buick motors!
next week its suspension. and so on, and so on...

 

[J-B Racing]

Aluminum vs Irons

Hey guys..
I have been researching on this issue for a few years now. This is for the reason that I have been running Iron Heads for over 10 years now. I have ben told by some Aluminum Head users that on a 109 ( 231 + ) Block, the Iron 8445 Race Ported have made more HP and better ET by .2 to .3 on the 1/4 mile. A few people that I know took off their $$$ Aluminum`s to go back to Iron and picked up what they lost.. WTF is up with that!!!
Thinking of buying M&A`s but I am Debating....
Since I had to take appart my 109, I have been thinking of going with AL Heads, but I am still undecided.
Maybe the TSM Heavy Hitters can elaborate here and tell a story?

For me this is good business since I have been Porting the Buick Irons for 10 years...

Thanks
Joe

 

[Underboost]

Hey guys..
I have been researching on this issue for a few years now. This is for the reason that I have been running Iron Heads for over 10 years now. I have ben told by some Aluminum Head users that on a 109 ( 231 + ) Block, the Iron 8445 Race Ported have made more HP and better ET by .2 to .3 on the 1/4 mile. A few people that I know took off their $$$ Aluminum`s to go back to Iron and picked up what they lost.. WTF is up with that!!!
Thinking of buying M&A`s but I am Debating....
Since I had to take appart my 109, I have been thinking of going with AL Heads, but I am still undecided.
Maybe the TSM Heavy Hitters can elaborate here and tell a story?

For me this is good business since I have been Porting the Buick Irons for 10 years...

Thanks
Joe

I just pulled my ported stock Iron heads off. I was running a 6.39 in the 1/8 w/ 1.45 60ft and got booted for no Lic. & 10.12 @ 134mph with a 1.60 60ft I never got a good 60ft to break into the 9's. :frown:

Now that I have these Alum M&A heads that flow more it's really hard to feel the difference when the tires just spin on the street. It feels faster but I'm not sure tell I have some track times.

 

[J-B Racing]

I just pulled my ported stock Iron heads off. I was running a 6.39 in the 1/8 w/ 1.45 60ft and got booted for no Lic. & 10.12 @ 134mph with a 1.60 60ft I never got a good 60ft to break into the 9's. :frown:

Now that I have these Alum M&A heads that flow more it's really hard to feel the difference when the tires just spin on the street. It feels faster but I'm not sure tell I have some track times.

This will be good info on your results.
Keep us posted on what you get out of this change, as it will be good
for many who wonder the same as I

 

[cruzn57]

these motors are an air pump

the best numbers I've heard on a flo bench for irons is about 220 cfm,
I've heard TA heads produce numbers over 300cfm
My M&A's are over 260cfm.
so it would stand to reason that anything that flows alot more air SHOULD produce more horse power, I guess brent will provide the data to either prove or dispute that theory.

my $$$ are on the aluminum heads to produce more HP

 

[J-B Racing]

the best numbers I've heard on a flo bench for irons is about 220 cfm,
I've heard TA heads produce numbers over 300cfm
My M&A's are over 260cfm.
so it would stand to reason that anything that flows alot more air SHOULD produce more horse power, I guess brent will provide the data to either prove or dispute that theory.

my $$$ are on the aluminum heads to produce more HP

I heard that Temperature in the Runners are killing the HP with the Aluminum
Heads.. I don't understand that one yet..

 

[boostingbuick]

What about the gn1-r heads? I run 14 bolt heads on my 4.1 block and have had no issues. And what has caused cracks?