the new guy
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Watch out, these guys will spend every cent of your money and then some!
I use the 343941 in my 2wd F100. I did my own head porting, intake and exhaust, mirror finish polished combustion chambers, with extensive exhaust port work and mirror polishing. Take a look in the gallery. I used the stock 1.55" exhaust valves though. It seems to work really well! Now I wish I'd used bigger valves.
I use the 343941 in my 2wd F100. I did my own head porting, intake and exhaust, mirror finish polished combustion chambers, with extensive exhaust port work and mirror polishing. Take a look in the gallery. I used the stock 1.55" exhaust valves though. It seems to work really well! Now I wish I'd used bigger valves.
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
the heads i used had i bit of a lip right at the exhaust port exit, heard rumors you can use some epoxy- aka jb weld- there to get rid of it and smooth the transition into the header even more... i'm gonna try it on this next set i'm getting ready to start building... when i did the exhaust valves i had them use the larger intake stone to relieve the close chamber wall next to the exhaust valve and then polished em up after that... looked killer!!!
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
ebay cheap intake... 8012366591 and 428 crank <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR bgColor=#d6dcfe><TD noWrap align=right>4587416392</TD><TD align=right>
</TD></TR></TBODY></TABLE>
there's a ton of fe intakes right now btr check em out...
</TD></TR></TBODY></TABLE>there's a ton of fe intakes right now btr check em out...
Last edited by fordraceboy; Nov 4, 2005 at 01:32 AM.
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
i dont know?? the top cylinder head guy arounf here is the one who said it so... i'm kinda leary about the idea but it figure it would really smooth that port out right there... you'd think that if it burned off it would be pushed by the flow out into the exhaust though right??
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
but if it stays there the flow is increased a ton!! he says if the ports are good and clean it will adhere to the casting flash.. i worry more about chunks breaking away than getting burned or melted, i've seen that stuf used in some pretty harsh industrial environments and do great... never subjected to that MUCH prolonged heat though... cheap and easy so i'll probably have give it a go- try anything once!! that's me in a nutshell.. LOL
just like mythbusters..... LOL
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Test concluded. It burns. It turns to this little pile of black ashes. Touch the ashes and they disintegrate. Funny thing is, it wont hold a flame. I dont think it would stand a chance in an exhaust port. Oh, and yes, the stuff I tried to burn was fully dried. I had some left over from doing some other automotive work.
Senior User
Joined: Sep 2004
Posts: 446
Likes: 0
From: Texas
map gas burns at what, 1200 degrees? your exhaust gasses can hit 1600. If his torch made ash of it at 1200, then it would be far from able to resist another 400 degrees. Worse still, you could suck flakes of that stuff back into the cylinders. Normaly, you're pushing gasses out the ports, but when you take your foot off the gas, the butterfly closes on the carb. the Cylinders are starving for air on the intake, and stillunder vaccume when the exhaust valve opens.
Filling that lip might still be a good idea, but I would do it with metal if it was me. carefull work with a TIG, and you could build it up, then grind it back down smooth. Welding cast is an art, though. Not something many can do.
It sounds like it's going to be one hell of a fun project.
Filling that lip might still be a good idea, but I would do it with metal if it was me. carefull work with a TIG, and you could build it up, then grind it back down smooth. Welding cast is an art, though. Not something many can do.
It sounds like it's going to be one hell of a fun project.
Posting Guru
Joined: Oct 2005
Posts: 1,235
Likes: 2
well that solves that theory.... i don't think i'll give it a go... i'm not any good at welding cast... welded a few cracks on exhaust manifolds and such but nothing that takes alot of skill. filling that lip would be very difficult with you limited access to it, looks like aftermarkets are getting more affodable by the minute... i wonder just how much getting rid of that lip is worth in flow?? i had my last set pretty smooth and all but there was still maybe a 1/8 inch ramp or so that it funneled down into before the header...