F1-00 Racing

iTrader: (1)

I appreciate the responses... What is the intake runners cc? Is it 310, 325, or 345? I know the 525 EFI is 315

MILD THUNDER

iTrader: (3)

Yea yea i know. Same guys once again chiming in to discredit anything i post.

I apologize. I dont have a brand new out of the box mercury valve jobbed untouched 500efi head to bring to my guys shop for flow numbers. Ill try better next time for you !

MILD THUNDER

iTrader: (3)

Ill pm you that info when i get them flowed, and what they flow after a few mods.

Mr Maine

Mild,
I have new sets of Dart 308 iron eagles. I did a minor port match to the exaust gasket. I left the bottom untouched for an anti reversion dam and left about a 1/16" all the way around so its not really matched, just closer. I don't expect noticeable gains here.

I did however very carefully clean up the combustion chamber including the heavy ridges around the valves seats, smoothed them and the chamber out. I did not change the shape of the chamber other than taking off the ridges around the seats. I assume this is kind of what is done to the cnc chamber of the dart pro 310?

I would be very interested to know the before/after flow numbers and what type of porting/head work is done.

Thanks.

MILD THUNDER

iTrader: (3)

Ill carbon copy you on that PM.

Looking forward to your build results on that combo. When its done, can you PM me back how you made out ?

SB

iTrader: (1)

MT. Post #1 to this thread.

MILD THUNDER

iTrader: (3)

I didnt see post number 1. Thanks for clearing that up. Maybe you can post what a stock untouched 500efi head flows. Then, we can discuss the variances between different flow benches, and how those numbers may also be off from what the OP's heads actually flow. I went back and edited my post with the flow numbers i put up in an effort to give the OP a ROUGH idea of what those style heads flow. Do i believe the numbers afr or dart put on their website for flow ? Absolutely not.

Want precise numbers, take your own heads to a bench and flow them.

To the original poster F1-00 racing, are these heads bone stock, or have they been redone at any point ?

F1-00 Racing

iTrader: (1)

bone stock

MILD THUNDER

iTrader: (3)

Heres strips information. Make note, these heads were not bone stock according to his posts. But anyway...heres the numbers he posted, with 2.25 valves on those heads and some blending work , and possibly different valve job then stock.

F1-00 Racing

iTrader: (1)

appreciate it...