I want to port out my stock D16Y8 manifold to flow better on boost. At minimum I want to bore it out to support a bigger throttle body. I'm thinking of putting a B16 Throttle body on there as its 60mm and pretty cheap. Or I might buy a bigger one, atm I dont really know but I want to port out the other manifold I have so its ready.

 

Look up standard abrasives. They have a DIY tutorial on their website. Honestly, it's so cheap, just go aftermarket and get an Edelbrock or Skunk2. If you are looking for sleeperness, send the manifold out to get extrude honed, and then match the throttle bore size to whatever throttle body you get. Go to a junkyard and get a Prelude throttle body, it'll work.

 

how is $275-350 "cheap"? My motor looks stock so im keeping the same manifold thats why i want to port it.

 

Once you have the new (bigger) TB you are going to use, get a gasket that matches it or cut a gasket to match it with a box cutter or X-acto. Mount the gasket on your manifold and use it to scribe the new diameter. I use machinists dye, but a sharpie will work in a pinch. Then cut it roughly to shape with a carbide bit. Be sure to blend the transition into the plenum. Finish with a 40 grit roll then an 80 grit roll. Done.

Goodson, Eastwood and Mondello all have the tools you need. If you are only going to do this kind of work occasionally, a decent die grinder is fine.

 

im buying a 68mm Blox TB from one of the HT Sponsors

What tool do I need though to do it? And where can i get it?

 

http://cgi.ebay.com/Aluminum-Exhaust...3286.m20.l1116

I love these Carbide burrs for knocking out all the casting and Manufacturing texture fast. You can get them in 6" shanks also for getting deep in there..

I use a Die grinder. You can be cheap and get one from Harbor frieght but there arent well balanced.
This is my king dingaling right here.

 

Makita might be pricy but I have had one for years. I think I got it when I was 15! lol

 

how much is cheap?

 

http://www.harborfreight.com/cpi/cta...emnumber=44141

But I don't reccomend....

 

UNLESS ITS A VARIABLE SPEED UNIT FORGET ABOUT TRYING TO SPIN A 6" LONG SHANK CARBIDE. Even that makita isn't a very good unit for spinning a carbide. Better for spinning a tootsie roll for finishing but even then variable speed is going to be your friend. Air tools work the best!!!!!!!!!! You may be able to use a cheap grinder and get one of those electronic speed reducers to make it work. BE Careful with the long bits in a high speed grinder. If they run out the slightest amount it can bend and pretty much rip the grinder out of your hands or worse. Your going to spend a decent amount of money even to buy **** tools so I would try and get someone that has made the investment and let them do it. As long as they know what thier doing you'll be happier in the end.

 

maybe i will get someone else to do it. Because I dont have the tools for it. Although idk how much its gonna cost.

 

One word.

Dotco.

Best Die-Grinder you'll ever feel/use/hold IMO. I went from using both of my Matco 90Deg and Straight Die grinders to a friends Dotco...Oh man night and day. Didn't want to give it back.

-Froth

 

we have seem some really good results with a reworked y8 intake manifold

 

There is no substitute for quality tools. The industrial rated IR and or C/P tools are also just as good. I have 2 1hp rated IR's that are like a milling machine in your hand. They have the weight and power and high quality collet to hold the cutter. Your not buying them cheap tough!

 

ya i guess its not worth it for me to buy the tools just to port 1 manifold. I need to find a new manifold now. How much does it typically cost to get a manifold ported for a bigger TB and port matched to the head?

 

A regular air die grinder will work if you are just doing this occasionally. All you need is a 6" carbide bit (wide teeth for aluminum), some cartridge rolls and a shaft for the rolls. As I posted earlier Goodson, Eastwood and Modello all have them.

You can port your intake runners at the same time, if you are worried about getting your money's worth.

Tip - spray some light oil (WD40) on the cartridge roll and the surface when you are using it.

Best of luck with your project.

 

thanks. I'll have to see about picking up some of the tools. If I get good at porting stuff then maybe I can do it for other people aswell. I'm sure my friends would all love to have ported manifolds to make more power