Cross sectional views?
Thread Starter
|
Elder User
Joined: Aug 2002
Posts: 662
Likes: 0
From: CA
Cross sectional views?
Can anybody email me cross sectional views of the E7TE ports, or advise me of a site that has them?
Also, what is the best way to plug the thermactor holes in the exhaust runners before porting?
Much thanks, Polkat
Also, what is the best way to plug the thermactor holes in the exhaust runners before porting?
Much thanks, Polkat
Senior User
Joined: Mar 2002
Posts: 450
Likes: 0
From: Charter Oak, Iowa
Cross sectional views?
Can't help ya on the cross sections. Some of the Mustang guys talked of plugging the thermactors. I think they were talking of some brass sized rod swaged in. I don't know how in the world they pounded them in tho. Really tho, the general consensus is to not worry about plugging them. Just grind them flush and leave 'em open. Make sure to plug the thermactor galleys on the firewall end of the heads. The accessory bolts plug the front end.
I really would get a junk E7TE to practice on. The runners on the ends of the heads are the ones to watch. Seems that being on the ends that the water jackets are closer to the exhaust runner roof. The short turn radius is pretty safe. I tried deepening the valve pockets so I could end up with a perfectly straight roof (the side with the thermactor holes on). I went too far and ground thru. Ouch! You're gonna have to be satisfied with a minor dog-leg in there to avoid this. If you can find a junk head (if we lived close enough I'd give ya mine to practice on) work on the end runners and get that the way you want. If you don't grind thru there then you won't need to worry about the center two runners.
Randy
I really would get a junk E7TE to practice on. The runners on the ends of the heads are the ones to watch. Seems that being on the ends that the water jackets are closer to the exhaust runner roof. The short turn radius is pretty safe. I tried deepening the valve pockets so I could end up with a perfectly straight roof (the side with the thermactor holes on). I went too far and ground thru. Ouch! You're gonna have to be satisfied with a minor dog-leg in there to avoid this. If you can find a junk head (if we lived close enough I'd give ya mine to practice on) work on the end runners and get that the way you want. If you don't grind thru there then you won't need to worry about the center two runners.
Randy
Last edited by PigFarmer; Apr 6, 2003 at 09:01 PM.
Thread Starter
|
Elder User
Joined: Aug 2002
Posts: 662
Likes: 0
From: CA
Cross sectional views?
Thanks Randy,
I've ported a number of older small block heads, but not the E7TE's, which is why I want the cross sections. I'll keep it in mind about the end runners.
I have seen some sites that suggest the holes do effect flow a bit, even with the bumps ground flush. I was thinking about some kind of high temp cement for the thermactor holes. I know there's a high temp epoxy out there, but I doubt it will stand up to that kind of heat. Exhaust cement? Humm...
I've ported a number of older small block heads, but not the E7TE's, which is why I want the cross sections. I'll keep it in mind about the end runners.
I have seen some sites that suggest the holes do effect flow a bit, even with the bumps ground flush. I was thinking about some kind of high temp cement for the thermactor holes. I know there's a high temp epoxy out there, but I doubt it will stand up to that kind of heat. Exhaust cement? Humm...
Thread
Thread Starter
Forum
Replies
Last Post
Polkat
Clutch, Transmission, Differential, Axle & Transfer Case
4
Nov 27, 2002 10:42 PM
Polkat
Clutch, Transmission, Differential, Axle & Transfer Case
2
Sep 27, 2002 06:16 PM
