310 cc heads
#243
Banned
Joined: Oct 2015
Posts: 277
Likes: 1
My name is Scott Foxwell. I am originally form the central coast of CA (Santa Barbara and San Luis Obispo counties). I started Foxwell Motorsports in 2003 when I decided to give the performance cylinder head and engine building thing a go. I was a general contractor at the time (why the references to dry wall) and was doing this on the side in my garage. I had a drag boat (how I met Chris Straub) and sold it to buy my first equipment...a VGS seat and guide machine and Sioux valve facer. I worked for Dart in 1990 and was fortunate to work with Rich Maskin as he was developing his Pro Stock program, I was there when he was doing engines for Mark Powuk and the Summit Racing Pro Stock team. When I moved back to CA I went to work for Alan Johnson for a little over four years and gained a great deal of knowledge and experience there, again, very fortunately. I've been involved in all sorts of racing from boat drags, car drags, oval track, road racing and land sped racing. I was the lead fabricator on two Bonneville cars both of which hold multiple 300+ mph records. For a while I was doing more fabrication than I was engine work but my passion lies in the power. Now I work with Chris Straub at Straub Technologies doing induction development and special project engine building. I served my country during peace time as a crewchief on Blackhawk helicopters from 1981-1983 and graduated distinguished grad from the US Army Tech school out of about 300 students. I attended Embry Riddle Aeronautical Univ. working toward my A&P license but never completed that. My father was a very successful mechanical engineer, racer, car guy and pilot. I was born 9/8/1958.
#244
Registered
Joined: Apr 2004
Posts: 1,268
Likes: 239
From: Michigan
Joe Sorry to hear about your friend, you are correct about what is really important in the big picture. We are all very fortunate to be able to enjoy this power boating hobby, and sometimes get a little to cocky and forget the most important things in life, Family and Friends. once again sorry for your loss!
#245
Banned
Joined: Oct 2015
Posts: 277
Likes: 1
There was no other inuendo, and I made that clear.
I was showing the extreme.
Would not be right if I said friendly and not friendly.
Your attitude has not moved on from the past. I checked on in PB's earlier and you are slamming people over there that don't agree with you. You got bagged for advertising without site sponsorship, selling parts, and treating others like schit over there and you changed your name there too and blamed those you don't get along with.
Your Just pretending to be since you switched names here.
I stayed out of this thread...but you now just provoked me.
I don't really want to go any further than this in this thread if you don't mind. Will you agree to this ?
I was showing the extreme.
Would not be right if I said friendly and not friendly.
Your attitude has not moved on from the past. I checked on in PB's earlier and you are slamming people over there that don't agree with you. You got bagged for advertising without site sponsorship, selling parts, and treating others like schit over there and you changed your name there too and blamed those you don't get along with.
Your Just pretending to be since you switched names here.
I stayed out of this thread...but you now just provoked me.
I don't really want to go any further than this in this thread if you don't mind. Will you agree to this ?
That's a lot of pretty heavy accusations you're making there, all from well in the past. Regardless of how childishly inaccurate it is; you want to sling mud, don't expect to not get any in your face. You had your hands in a great deal of all that mess, right up to the elbows. You don't take a back seat to anyone when it comes to slanderous and libelous comments, being foul mouthed and just plain having a really crappy attitude. You wrote the book on putting people down who disagree with you (or you disagree with) and you've probably carried a grudge like a little boy for longer than anyone i know. Here, is a perfect example.
You go ahead and live in the past and carry all that hate. Life is too short for me to. That stuff causes cancer. I told you before, water under the bridge for me.
And I apologize to the rest of the readers for this...really been trying to stay on topic but some comments just need addressing when the antagonism is obviously not going to stop.
Last edited by horsepower1; 11-17-2015 at 09:36 PM.
#246
The little searay is In Arizona now.
You may wonder why someone would drive 2500 miles one way and then back to buy an 18' searay. One could buy one of the thousands in any state.
It's because the boat was meticulously rebuilt/restored. Really a nicely restored little boat.
Carry on with your tantrum.
#247
My name is Scott Foxwell. I am originally form the central coast of CA (Santa Barbara and San Luis Obispo counties). I started Foxwell Motorsports in 2003 when I decided to give the performance cylinder head and engine building thing a go. I was a general contractor at the time (why the references to dry wall) and was doing this on the side in my garage. I had a drag boat (how I met Chris Straub) and sold it to buy my first equipment...a VGS seat and guide machine and Sioux valve facer. I worked for Dart in 1990 and was fortunate to work with Rich Maskin as he was developing his Pro Stock program, I was there when he was doing engines for Mark Powuk and the Summit Racing Pro Stock team. When I moved back to CA I went to work for Alan Johnson for a little over four years and gained a great deal of knowledge and experience there, again, very fortunately. I've been involved in all sorts of racing from boat drags, car drags, oval track, road racing and land sped racing. I was the lead fabricator on two Bonneville cars both of which hold multiple 300+ mph records. For a while I was doing more fabrication than I was engine work but my passion lies in the power. Now I work with Chris Straub at Straub Technologies doing induction development and special project engine building. I served my country during peace time as a crewchief on Blackhawk helicopters from 1981-1983 and graduated distinguished grad from the US Army Tech school out of about 300 students. I attended Embry Riddle Aeronautical Univ. working toward my A&P license but never completed that. My father was a very successful mechanical engineer, racer, car guy and pilot. I was born 9/8/1958.
#248
Registered

Joined: Aug 2003
Posts: 1,129
Likes: 32
From: Racine, Wisconsin
My name is Scott Foxwell. I am originally form the central coast of CA (Santa Barbara and San Luis Obispo counties). I started Foxwell Motorsports in 2003 when I decided to give the performance cylinder head and engine building thing a go. I was a general contractor at the time (why the references to dry wall) and was doing this on the side in my garage. I had a drag boat (how I met Chris Straub) and sold it to buy my first equipment...a VGS seat and guide machine and Sioux valve facer. I worked for Dart in 1990 and was fortunate to work with Rich Maskin as he was developing his Pro Stock program, I was there when he was doing engines for Mark Powuk and the Summit Racing Pro Stock team. When I moved back to CA I went to work for Alan Johnson for a little over four years and gained a great deal of knowledge and experience there, again, very fortunately. I've been involved in all sorts of racing from boat drags, car drags, oval track, road racing and land sped racing. I was the lead fabricator on two Bonneville cars both of which hold multiple 300+ mph records. For a while I was doing more fabrication than I was engine work but my passion lies in the power. Now I work with Chris Straub at Straub Technologies doing induction development and special project engine building. I served my country during peace time as a crewchief on Blackhawk helicopters from 1981-1983 and graduated distinguished grad from the US Army Tech school out of about 300 students. I attended Embry Riddle Aeronautical Univ. working toward my A&P license but never completed that. My father was a very successful mechanical engineer, racer, car guy and pilot. I was born 9/8/1958.
Just like I thought
He is clearly not qualified to be on this site helping people out with pump gas hydraulic roller cammed 540s. Let alone what heads might work on that combo.
What the hell is wrong with this site.
#249
Registered

Joined: Oct 2007
Posts: 8,439
Likes: 94
From: yorkville,il
Here's your answer mike:
The little searay is In Arizona now.
You may wonder why someone would drive 2500 miles one way and then back to buy an 18' searay. One could buy one of the thousands in any state.
It's because the boat was meticulously rebuilt/restored. Really a nicely restored little boat.
Carry on with your tantrum.
The little searay is In Arizona now.
You may wonder why someone would drive 2500 miles one way and then back to buy an 18' searay. One could buy one of the thousands in any state.
It's because the boat was meticulously rebuilt/restored. Really a nicely restored little boat.
Carry on with your tantrum.
Last edited by mike tkach; 11-18-2015 at 08:28 AM.
#250
Banned
Joined: Oct 2015
Posts: 277
Likes: 1
What restrictions?
Please explain. What do you know about cross section, velocity and port/valve area vs. engine displacement and rpm, and what the engine wants or needs? What do you know about any of that regarding hp/tq production? Tell me how much experience you have in induction and engine design and what it takes to make X amount of power for a given combination?
For ideal velocities in the port and valve for a 540 turning 6000 rpm, the areas need to be about 2.64 sq. in. of minimum cross section in the port and about 3.03 sq in. of valve area. The AFR 305 has a min. cross section of 2.99 sq. in and a valve area of about 3.05 sq in. With a 240* @ .05 cam, a 540 turning 6000 rpm needs about 351cfm @ 100% VE. The 305 intake port flows that much somewhere between .550 and .600" lift. I just don't see a restriction but maybe you can point it out to me.
If you want, lets look at 7000rpm. Minimum cross section 3.08 sq. in., valve area 3.54 sq. in. and lets say with a 270* @ .05 cam, needs about 364 cfm. The 305 still has enough cross section (-.09 sq in. is insignificant as far as a restriction), still flows plenty of air but needs more valve area. Yes, we are talking boats not cars, but I don't think the cylinder heads know that...do they??
And FWIW I would not tell someone to choose a set of 305's over 315's to make 800hp but by the numbers, you can see if you HAD the 305's, it could be done.
Please explain. What do you know about cross section, velocity and port/valve area vs. engine displacement and rpm, and what the engine wants or needs? What do you know about any of that regarding hp/tq production? Tell me how much experience you have in induction and engine design and what it takes to make X amount of power for a given combination?
For ideal velocities in the port and valve for a 540 turning 6000 rpm, the areas need to be about 2.64 sq. in. of minimum cross section in the port and about 3.03 sq in. of valve area. The AFR 305 has a min. cross section of 2.99 sq. in and a valve area of about 3.05 sq in. With a 240* @ .05 cam, a 540 turning 6000 rpm needs about 351cfm @ 100% VE. The 305 intake port flows that much somewhere between .550 and .600" lift. I just don't see a restriction but maybe you can point it out to me.
If you want, lets look at 7000rpm. Minimum cross section 3.08 sq. in., valve area 3.54 sq. in. and lets say with a 270* @ .05 cam, needs about 364 cfm. The 305 still has enough cross section (-.09 sq in. is insignificant as far as a restriction), still flows plenty of air but needs more valve area. Yes, we are talking boats not cars, but I don't think the cylinder heads know that...do they??
And FWIW I would not tell someone to choose a set of 305's over 315's to make 800hp but by the numbers, you can see if you HAD the 305's, it could be done.
The valve area on the 305 heads is not 3.79 sq in. It is somewhere in the neighborhood of 3.05 sq in. Which is plenty for our 540 turning 6000 rpm. When we jump to 7000 rpm...and i should have caught this...the cross section still remains usable but the valve area demand increases significantly. I was mistaken when I said the valve area of the 305 was still adequate. My apologies to all.
Last edited by horsepower1; 11-18-2015 at 08:58 AM.





