cwsttu

hey guys i was wondering if anybody knew if this was a good way to port the throttle body.


the thread didnt ever come out with an outcome of if it was a good idea. what are yalls opinions about it because im thinking of doing it... not so much to that extent but a good bit. anyways just let me know. thanks in advance

christopher

hugo20

the flap dont allow more air... waste of time

NZConvertible

The picture you've posted does not show three bores being changed to one, it just shows the smoothing and blending that is often done after removing the #2 secondary throttles.

Replacing the stock TB with one large single TB would require quite a lot of custom fabrication and yield minimal gains unless the engine was already highly modified.

cwsttu

ok... in other words im bored... would this be bad or good to do? i have almost a good week till i get a part for my car to get it running again. i want to port it i just dont know how much to do. thanks guys

Scott 89t2

probably not worth the time if your car is NA

SpeedFreak03

Honestly I don't think it's worth the time, but if you can do/like doing stuff like that, I don't think it would hurt...

fast87t2

iTrader: (1)

well, i have put a ported TB on a '87 n/a and it was ported a bit more then the one in the pic and i didntt notice muhc lower end change but the car did hit 100 alot faster then it did before....

just my 2 cents
Joe

Davidov

iTrader: (2)

Port it! Just don't take too much off the sides and tear a hole in you throttle body.

casio

if you dont know how far to go, you can ruin the TB. you may want someone who has done it to teach or guide you.. unless you have a spare.

cwsttu

hell im gonna give it a shot, ive done some porting before so im not AS likely to mess up, course im not gonna just go crazy on it. ill post pics when im done of what i did

F1blueRx7

iTrader: (5)

Well if you screw up I can probably sell you a replacement for cheap!

Ronac

I started my porting a few days ago. It take SOO long, I've spent hours and hours trying to get rid of little scratches with the sand paper. I still can't get it all smooth, and I'm still on my first bore. AND I still go the intake manifolds to go. Any tips on how to do this faster?

ddub

i was under the impression that a smooth surface when porting wasnt that big of a deal? like as long as the sides arent jagged, does it really matter if its perfectly smooth? a car shop once told me that it wasnt that big of a deal, that the "port and polish" ways that had been around for so long werent really that necessary... maybe they were just dumb or something, but i was wondering that

White_FC

They were most probably talking about 'port and polishing' in the heads of pistons cars, or in the ports of a rotor after the fuel injectors.
This is because fuel can potentially stick to the walls of a completly smooth polished runner, where as it wont if it has a bit of turbulance near the vrey sides of the runner (slightly rough finish).

AFAIK, smooth is better before the fuel injectors.

Ronac

Yeah, I agree with White FC. Theres no contact with fuel at the throttle body so a smoother surface should be better for airflow and you dont' have to worry about fuel sticking to the walls.

ddub

ah i see, that makes sense

NZConvertible

Smooth yes, polish no. Any difference in flow from actually polishing the inside of a TB would be ridiculously small and certainly not worth the effort and time.

cwsttu

ronac- are you using just sandpaper? if so no wonder you need to get a dremel tool or an air compressed one. im using both for now. what im doing but i do not recomend anybody else doing off my word is cutting the outline i want out of the TB with a cutting disc, this saves hours of solid dremeling lol but its really hard to do. good luck with yours man, ill post pics in a while

von

mine looks exactly like the pic I had somone named BDC do it on the forum just like that. Awsome job to. It should make a difference weather you feel it or not its an awsome near free mod. Do it if you race especially

Ronac

Yeah I got a dremel. I'm using tunsten carbide bit to cut the general shap. Then I use the sand paper to smooth it out. I just realized that i have a sanding dics. WOW, advice to others, USE THE SANDING DISC. It makes it so much easier to take out those big nicks and dents. After that, you proceed with the sand paper.

Still workin' on the first bore still...

jreynish

iTrader: (2)

assuming that you have done everything else and you need every little fraction of a HP that you can get... such as F1 and such... polishing would be beneficial!

Ronac

What exactly is polish? Do you need to use metal polish to do it?

I plan on just finishing with 1500 grit sand paper.

NZConvertible

That's all you need.

Ronac

Sweet, I'm on my way then!