Porting a 14b?

[Vhp777]

I want to get a 3" turboback exhaust all together sometime in the near future, so that I won't have to go back and install a new downpipe, etc as I get more mods.

However, I'm worried about boost creep on the stock 14b. I'm planning on getting an 02 eliminator downpipe to help cut down on that, but I was wondering if porting the exhaust side of the turbo would help. I figure I'm due to take it out and see what kind of condition it's in, possibly get it rebuilt, etc. Would it be worthwhile to have it ported? If so, should I get the intake side ported, too? What about clipping? Does that do anything on a 14b?

Thanks in advance.

 

[candela]

If I were you i would just take the money youd use to Port and rebuild it and buy a new 16G!! Eitehr way, I think porting it wouldn't be a bad idea if you plan to keep it. It will help regardless of turbo size. However I dont think clipping a 14b would make it anymore efficient in any part of the power band then it already is...


Austin

 

[ItsStockOfficer]

porting will always be beneficial but I highly recomend you do it yourself, very easy. Your 02 eliminator is a wastegate dump right? That will help creep but you might still get it. Clipping would help but no one will clip used turbos and its a waste to have anything done to a 14b, . Get a new 16g or bigger is my advice.

 

[Vhp777]

Well, I plan on getting a big 16g, but not until late summer 2003 at the earliest.

However, I want to get the exhaust well before then so I can crank up my boost.

If I were to port it myself, I'd need some directions, heh. I've never ported anything in my life.

 

[candela]

Buy a dremel and some good bits and open everything up...

 

[talontsi01]

my 14b is ported. im runnin 16 psi with ease. i can push it up to 18 if needed. its all about air flow. i also have a double-sized smic, and ported pistons which pumps a lot more air through my car. but yea, you should port your stock turbo, its worth it.

 

[candela]

You ported your pistons :laugh: :laugh:

 

[Enigma_Man]

Yeah, haven't you heard? Porting your pistons _really_ lets the turbo flow better, hahahahaha.

What an idiot. All about air flow He's probably one of the guys that was trying to convince me a bigger turbo could force more air through an engine at the same PSI and temperature, hehehe. HE'S FOUND THE WAY!!

-Jesse

 

[Vhp777]

Yeah, I read that guy's post and I thought, "cool, I guess porting would be a good idea."

That is, until I got to the part where he said he ported his pistons.

 

[Enigma_Man]

well, porting is good just not the pistons, hehe.

-Jesse

 

[Vhp777]

Haha, alright. Thanks.

 

[talontsi01]

sorry about that. i didnt mean the pistons. i meant ported heads.

 

[CanadianTSi]

You ported your heads eh?

How many motors are you runing???

 

[Vhp777]

Originally posted by CanadianTSi
You ported your heads eh?

How many motors are you runing???

Duh, didn't you hear? The newest biggest fad for DSMs is to run multiple engines. I have three, myself.

 

[DSM_Drew]

Porting the wastegate is a very good idea on any turbo. You could also open up the turbine inlet, smooth it out and get rid of that step.

Some people say porting the compressor is beneficial, others (most notably Buschur) say they have seen no benefit at all.

 

[Wikkedson]

Yeah i wouldnt worry about porting the cold side, i dont think this offers any benefit at all. But thats just my opinion. Boost creep is a SOB tho, make sure you get a upgrade WG flapper if u get a Big 16g.

Oh yeah and if you do get a big 16g get one from like buschur or FP. Turbochargers,com has them but they dont tell you that your really getting a small 16g with Big 16g wheels. Thats why they sell them so cheap.

So really you get what you pay for, the cheapest company is not always the best to go with. Also ForcedPerformance does a very good job porting as well. I highly recommend them, from experience, but hey what do i know?????

 

[DSM_Drew]

A big 16g is a small 16g with a bigger compressor wheel.

 

[Wikkedson]

Yeah its the same housing, but diff wheel. But mitsu sells them brand new. Turbochargers buys small 16gs and then converts them. Id rather have the real thing than a rebuild. but thats just me

 

[4pistons]

I ported my piston................with an intake valve! Didn't run good after that...too much airflow!!

If you're going to a 3" full exhaust I don't think you can even get boost creep with a 14B(??) But porting the turbine housing definitely helps performance. There is some excellent info and pics at the VFAQ on porting your turbo. Don't even attempt it without reading that first.

It's going to take you an awfully long time to port it with a Dremel tool. It's just too small. Beg or borrow an air die grinder and buy a carbide bit. Much faster.

Rick - '91 GSX Ported 14B, 2 1/2" exhaust, no creep

 

[16g-95gsx]

Hey I have some pics of some 14b's I ported here if you would like to see them. Just took them yesterday and are just planning on selling the turbos. It's pretty obvious the benefit that porting allows. In the pics you will notice that I opened the inlet up quite a bit, allowed the wastegate flapper to almost double it's angle of opening (allowing MUCH more flow) and also ported the turbine exit slightly and the wastegate hole slightly. It isnt machine quality porting on the inlet, but it definately isnt going to hurt anything thats for sure,

If you do your own porting DO NOT USE A DAMN DREMEL. You will punch yourself for it. Took me about 2 hours to do the job I did and thats with a die grinder and a nice carbide bit. Do yourself a favor and get one. A die grinder will run 20 bucks at lowe's and a carbide bit can be had for under 30 bucks

 

[machgsx]

Originally posted by 16g-95gsx
Hey I have some pics of some 14b's I ported here if you would like to see them.

i'd be interested in seeing them. if you can post them here or email them to me at [email protected] i'd appreciate it.

 

[TSi92]

If you port the turbine housing you WILL have boost creep. Unless you get a bigger WG flapper door.

 

[4pistons]

If you port the turbine housing you WILL have boost creep. Unless you get a bigger WG flapper door.

Well, not definitely. I don't get boost creep with the stock WG and I've gone to 21 psi. I know three others with ported 14Bs and no creep. Boost creep happens when you flow more air than the WG can regulate and I don't think it's too hard to keep up with a 14B, ported or not. It just doesn't flow that much regardless of pressure. A restrictive exhaust will certainly contribute towards boost creep though.

Rick - '91 GSX

 

[Vegas Smith]

ok, what exactly is boost creep? and why does a bigger exhaust fix it? thanks

 

[16g-95gsx]

Originally posted by 4pistons

Well, not definitely. I don't get boost creep with the stock WG and I've gone to 21 psi. I know three others with ported 14Bs and no creep. Boost creep happens when you flow more air than the WG can regulate and I don't think it's too hard to keep up with a 14B, ported or not. It just doesn't flow that much regardless of pressure. A restrictive exhaust will certainly contribute towards boost creep though.

Rick - '91 GSX

First off, the higher the PSI you run, the less likely you are to creep.

Second off I tried to post the pics over on DSMtalk, so here's a link, see if they work, if they dont then maybe someone can host them for me.

http://www.dsmtalk.com/forums/showthread.php?threadid=76591

enjoy