i know you all like pictures....

[blkfordsedan]

What's the idle like on your FMS cam? Mine is just rough enough it's annoying, but doesn't really have any lope or sound like a performance cam. I really haven't been able to set the idle or timing yet, and it just has an open head pipe, so maybe it will be better. It does idle smooth at about 1000 rpm, however. I'd just like to know what it SHOULD idle and sound like.

[FestYboy]

proper timing will get you a steady 750 easy. as it is, my ear says i'm right there and it's smooth. no lope, no roughness to speak of, but the off idle response is lacking which says my timing is not advanced enough; easy fix.

[FestYboy]

Gonna bump this for Karl's sake (sc72).

[sc72]

Thanks FestYboy, i'll get on it.

[Scottembury]

Very nice! Should run great.

[Sid_RallyX_82]

What did you do in the ports? It looks like you just removed the casting marks?

[firebush357]

What did you do in the ports? It looks like you just removed the casting marks?

You can take quite a bit more off than just the casting marks. You can basically just gasket match it, take down the valve guides and open it up as much as you can. The stock head has a really sharp angle in the exhaust port that can be elongated and smoothed out really well.

[Sid_RallyX_82]

I assume if you go that far that you would need a flow bench to do anything beneficial

[firebush357]

I assume if you go that far that you would need a flow bench to do anything beneficial

If you had one then it would helpful but as long as you make all of the ports close to the same it will be better than the stock head. If you look up Dickmeyer Automotive on Facebook he has a photo album of him opening up a B3 head professionally and putting in bigger valves but most of us don't have access to that fancy equipment.

It is hard to explain how restrictive the B3 head is without actually taking one and start taking material off. I know Matt Dickmeyer said something about getting 25% more air flow just by shaving the valve guides down.


EDIT: Link to Head Job by Dickmeyer

[Sid_RallyX_82]

If you had one then it would helpful but as long as you make all of the ports close to the same it will be better than the stock head. If you look up Dickmeyer Automotive on Facebook he has a photo album of him opening up a B3 head professionally and putting in bigger valves but most of us don't have access to that fancy equipment.

It is hard to explain how restrictive the B3 head is without actually taking one and start taking material off. I know Matt Dickmeyer said something about getting 25% more air flow just by shaving the valve guides down.


EDIT: Link to Head Job by Dickmeyer

I see his machining skills far exceed his photography skills.
It really goes without saying that 25% is REALLY impressive gain from just shaving off the excess valve guide. That's actually so impressive it makes me skeptical, but I'm naturally skeptical of everything. I'll have to get another head to experiment with on my daily...

[ryanprins13]

I see his machining skills far exceed his photography skills.
It really goes without saying that 25% is REALLY impressive gain from just shaving off the excess valve guide. That's actually so impressive it makes me skeptical, but I'm naturally skeptical of everything. I'll have to get another head to experiment with on my daily...

No kidding.
This is the head thats on bens car now right? Dickmyers goal was 300+ hp b3+t but quit half way through and i think ben had it dynoed at 90whp? Was there work done to it other than on the head?

Sent from my SM-G920W8 using Tapatalk

[FestYboy]

Iirc the block was decked and the head shaved for compression. 90whp puts the crank output at at least 100hp, so a nearly 40% increase with a cam, valves and head work is impressive. Almost 25% through a significant mod as removing the valve guide protrusion isn't so unbelievable.

[firebush357]

No kidding.
This is the head thats on bens car now right? Dickmyers goal was 300+ hp b3+t but quit half way through and i think ben had it dynoed at 90whp? Was there work done to it other than on the head?

Sent from my SM-G920W8 using Tapatalk

Ported the Head, Cut bigger Valves, Custom Full Exhaust including Long Tube Headers, Custom Larger Plenum and Upper Runners, probably a new Cam, i thin he decked the head for higher compression like Festyboy said and then eventually a turbo. iirc he hit around 200hp with a Turbo B3.

I'm not sure if it was on his car but I know he shaved down a b3 crank and polished it at one point as well.

His post are still on here but I doubt the Pictures are still functioning.

[firebush357]

Found the Album of some of Dickmeyers engine pictures on Facebook.

HERE
HERE

Some of his other Festiva builds for customers

HERE

Dennis Foster's B6

[greywolf200]

He does make a really nice looking header.