525 EFI Head Flow Numbers
Anyone have flow numbers or a link? I know they are Edelbrock heads but I believe they are made to Merc's specs? Plenty of numbers on Edelbrocks's site but big differences between the heads. Not sure what compares to the 525 heads.
|
The best answer I got from merc tech support was they were
118-120cc on the combustion chamber, he would not give me the exact number or any other specs. Also valve stem dia. is 3/8. I think the edelbrock marine heads are pretty close to the 525 head. |
Are you sure there are big differences from the Edelbrock heads ??
I thought they were very close. I have Edelbrock rect ports on my engines and thank god I had them flowed before I put them on. Had to do lots of porting on the exhaust side to get proper intake to exhaust flow ratio. I bought them for 3 reasons. 1. Wanted aluminum heads but on a budget. 2. did not want to deal with the angle changes of the other aftermarket heads. 3. They are exact replacements for stock steel heads as far as mounting points, bolt holes and sizes etc. Smitty |
Originally Posted by rw40426
(Post 3554039)
I think the edelbrock marine heads are pretty close to the 525 head.
|
Originally Posted by Smitty
(Post 3554054)
Are you sure there are big differences from the Edelbrock heads ??
I thought they were very close. I have Edelbrock rect ports on my engines and thank god I had them flowed before I put them on. Had to do lots of porting on the exhaust side to get proper intake to exhaust flow ratio. I bought them for 3 reasons. 1. Wanted aluminum heads but on a budget. 2. did not want to deal with the angle changes of the other aftermarket heads. 3. They are exact replacements for stock steel heads as far as mounting points, bolt holes and sizes etc. Smitty |
Go with AFR's you will NOT be sorry!!!!
|
Originally Posted by offshore420
(Post 3554420)
Go with AFR's you will NOT be sorry!!!!
I'm getting my heads ported and I'm hoping they flow similar to the 525 heads. |
Originally Posted by onesickpantera
(Post 3554471)
Not going with new heads. I was using a desktop dyno program and wanted to see how accurate it was.
I'm getting my heads ported and I'm hoping they flow similar to the 525 heads. |
Originally Posted by onesickpantera
(Post 3554471)
Not going with new heads. I was using a desktop dyno program and wanted to see how accurate it was.
I'm getting my heads ported and I'm hoping they flow similar to the 525 heads. I can tell you this, from my experience with Desk top dyno, plugging in all the numbers and running a hundred diff. combos, then picking the combo and putting it to the test on a real dyno, it was a total waist of time. DD number's weren't even in the same ball park as the actual dyno runs. |
Originally Posted by POWERPLAY J
(Post 3554482)
JV is the best! Should see some good #'s
|
All times are GMT -5. The time now is 05:55 AM. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.