started porting my e7s :D

Foxfan88 · Jan 18, 2006

Its not really that bad, i did alot of reading before i started and its actually fun. Will be very time consuming.

When i first took the grinder to the head, i didnt have a feel for it yet, i was like "**** this is going to be harder than i thought"

then after i got to doing for an hour or two, it got easier.
Kind of hard to explain, but you can tell what needs to be done to the ports, i feel it with my finger and just make the stuff smooth and no sharp edges.

If you ever thought about trying it, try it, its fun

Roland69 · Jan 18, 2006

I did my own on my 89 Z24 and did some acid porting on the intake and doing all that it really woke that thing up. Let us know it turns out when you are done.

Foxfan88 · Jan 19, 2006

well i've got a shortblock ready, has a B cam. all i need is heads and i can start the motor swap, i think it will be hard to tell how much my porting will do but i hope its good.

onefstsnake · Jan 19, 2006

pics?

8950HO · Jan 19, 2006

Yikes,you posted some threads recently about doing it,now wham,you are doing it.

Porting is not something you can just take a die grinder and carbide cutter to and go nuts.

You have to know what you are doing.

MOST of the big gains from porting E7 heads come from serious bowl work,not port matching to a gasket.

After all the work you do.Take them to get flow tested and see how much of an improvement you have made from stock,if you haven`t ported them correctly from the start.

Roland69 · Jan 19, 2006

At least he it tring to do his own heads. If he screws them up there only E7's so what is the worst that can happen besides they should flow better. Any thing will be better than those korked heads.

onefstsnake · Jan 19, 2006

Would grinding down the Thermactor(sp?) Bump, and smoothing everything out help any?

Looks like the Thermactor bump would keep the heads from flowing well.

bluevenom867 · Jan 19, 2006

Try not to go wild on the runner bottom and re-shaping the runner.Also,careful with the short turn radius,you want a smooth flow into the bowl,no sudden drop.Actualy I have seen gains in flow by ADDING epoxy to the short turn radius.And when your port matching the runners,dont port the inlet off to one side,and carefull not to go through into the push rod holes.And just remember:

bigger is not always better.

edit:Although I will say its pretty hard to make the heads any worse.....

25thmustang · Jan 19, 2006

Cant hurt to try it out. I give you a thumbs up. Most people wouldnt attempt to do this, and you are! Again worst case scenario he loses a set of E7s and his own time!

-=Red5.0GT=- · Jan 19, 2006

http://www.armstrong.edu/ron/auto/e7.html

hey man this site will give you a lot of pointers with the shape of the port and bowl. man thumbs up for doin' it yourself!

352Ford2 · Jan 19, 2006

Roland69 said:
At least he it tring to do his own heads. If he screws them up there only E7's so what is the worst that can happen besides they should flow better. Any thing will be better than those korked heads.

I agree, and basic porting (gasket match, bowl blend, radiousing the short side) is easy and with a little direction can get good results

For all out jobs, it takes a lot of experiance and a flow bench, but not the simple stuff.

not to steel the post, but I would like to hear more about your acid porting Roland69

Daniel50 · Jan 19, 2006

the new thumper? we will have foxfan heads and he'll put thumper out of business! lol jk. good luck!

Roland69 · Jan 19, 2006

352Ford2 said:
I agree, and basic porting (gasket match, bowl blend, radiousing the short side) is easy and with a little direction can get good results

For all out jobs, it takes a lot of experiance and a flow bench, but not the simple stuff.

not to steel the post, but I would like to hear more about your acid porting Roland69

I used some acid we have at work we use it for cleaning Kegs (I work in a brewerey) It's just an etching acid really. So all I did was set the intake upside down and fill it with acid and let it sit for 2 days. Cleaned them up and weighed the intake it ate just over a pound of aluminum out of the intake. It doed an ok job it dosen't come out looking polished but lookes more like the factory castings (witch isn't bad). So I did the same to the lower intake. all said and done I had to clean were the upper and lower ports meat and that was easy. Cost me $0 and a little bit of work. But I was at work so really I got paid to do it.

25thmustang · Jan 19, 2006

Acid porting... racers have been using it for years, because it does remove material but looks factory original when done!

352Ford2 · Jan 19, 2006

What type of acid? HCL?

what molar concetration?

do you have any worries about stress corosion cracking?

mob · Jan 19, 2006

are you going to use the stock valvetrain? Are you using air or electric grinder?

Roland69 · Jan 19, 2006

352Ford2 said:
What type of acid? HCL?

what molar concetration?

do you have any worries about stress corosion cracking?

I don't know what kind of acid it was but it was pink. I drove the car for about 2 years after doing that with out any problems and it is still being driven to this day. Some guy that lives in the same town as me bought it like 6 years ago. I heard that muratic acid works well too.

Roland69 · Jan 19, 2006

Hey foxfan how you making out lets see some pics.

fox racer · Jan 19, 2006

does thumper only do stock heads?

-=Red5.0GT=- · Jan 19, 2006

nopers! as a matter o fact, i just got my gt40's back from him yesterday!

started porting my e7s :D

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