Epoxy for filling ports

ddonaca351 · Mar 18, 2006

I have seen epoxy used for manifolds before, but didnt think it would live in the heat of a cyl-head... but the other day I saw some ports that had been partially filled, and they looked real good. (engine masters challange)

Anybody have experience with an epoxy or product will live inside the port?

Thanks for the help,
Dave-

ddonaca351 · Mar 18, 2006

hey MOD, any chance you could move this to Tech? I hit talk instead of tech.... sorry it's late / early.

Thanks,
Dave-

WORTH · Mar 18, 2006

ddonaca351 said:
I have seen epoxy used for manifolds before, but didnt think it would live in the heat of a cyl-head... but the other day I saw some ports that had been partially filled, and they looked real good. (engine masters challange)

Anybody have experience with an epoxy or product will live inside the port?

Thanks for the help,
Dave-

What are you trying to fix, I don't trust the plastics. I'd rather bite the bullet and find a good part to start with.

ddonaca351 · Mar 18, 2006

What Im trying to "fix" is a poor factory port design, but I dont feel like spending 2000 on a new set of heads.

DD

302 coupe · Mar 20, 2006

epoxy is fine, cleveland guys have been using it for years. I wouldn't hesitate to use it in an intake port at all. I don't know about the ehaust port though, its gets pretty hot, about 1300*, plus you'd want to add in a little safety factor.. The intake side of the heads probably stays about 200-250*, so its no big deal.

mustangdave · Mar 20, 2006

They also make port plates for the Cleveland; much cheaper than heads.

WORTH · Mar 20, 2006

302 coupe said:
epoxy is fine, cleveland guys have been using it for years. I wouldn't hesitate to use it in an intake port at all. I don't know about the ehaust port though, its gets pretty hot, about 1300*, plus you'd want to add in a little safety factor.. The intake side of the heads probably stays about 200-250*, so its no big deal.

Aren't you afraid of a piece breaking off and sucking it into a valve?

302 coupe · Mar 21, 2006

seems like that could happen, but lots of people have filled cleveland ports with epoxy and had no problems.

rbohm · Mar 21, 2006

if there was going to be a problem with epoxy filling the intake ports, it would have been in the late 60's and early 70's when the racers were filling the ports on the boss 302 heads to improve mid range airflow through the ports. the key is proper preperation of the area to which the epoxy is going to be applied. it must be absolutly clean and free of debris.

mustangdave · Mar 21, 2006

Check this out.
http://www.mpgheads.com/PortPlate/PortPlateDetail.htm

1320stang · Mar 22, 2006

Devcon is what they use I believe. Used in racecar engines ALL the time. Only on the intake side though. My buddy has a $35k 489 all aluminum high riser FE and the bottoms of the intake ports on the head and the floor of the intake have been filled to the size of medium risers and it runs 8.30's N/A.

Epoxy for filling ports

ddonaca351

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ddonaca351

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WORTH

ddonaca351

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302 coupe

mustangdave

My rearend needs a stud and two nuts.

WORTH

302 coupe

rbohm

mustangdave

My rearend needs a stud and two nuts.

1320stang

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Epoxy for filling ports

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My rearend needs a stud and two nuts.

My rearend needs a stud and two nuts.

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