Author Topic: found yet another exhaust made for the bandit (Read 12150 times)

PitterB4 · « **Reply #31 on:** January 13, 2006, 03:00:33 PM »

Quote from: "gsxr400 racer"

Jesus apples oranges , oranges apples get it done mate! Wish my life was so simple!

Yeah - I'm a regular F-ing fruit salad with this thing!

Red01 · « **Reply #32 on:** January 13, 2006, 09:45:06 PM »

Quote from: "PitterB4"

Quote from: "Red01"
I'm getting a little confused here.

At what location(s) do you have a conflict of sizes?

What??? I'm clearer than Jay, right????

Randy has it right. I think my options are using the V&H headers with my 2" high midpipe (stretched to fit the header outlet) or the V&H mid with the M4 stretched. The problem with the latter is that it's gonna be too long. Once I play with it a little - do some dry-fitting, there may be other options... like having a muffler shop make me a new 2.25 mid bent like my high pipe... Like I said, another project.

Yeah Russ, I'll get to that head light!

OK, I see now. I didn't realize you thinking of different setups, so I couldn't understand why you'd need to stretch the mid and the can. Now I see it's an either/or thing.

Can the V&H mid be shortened?

PitterB4 · « **Reply #33 on:** January 13, 2006, 10:45:37 PM »

Quote from: "Red01"

Can the V&H mid be shortened?

It has a bend at both ends and one of them would have to be recreated from the cut end but I guess that could work.

PitterB4 · « **Reply #34 on:** January 14, 2006, 01:08:29 AM »

Ok, last stupid question and I will let this thread mercifully die!

If I were to use my current, high-mount, 2" mid, would I be ruining the power gains from the headers? Obviously, I'll loose something. Just wondering how much. (To correct my post above, it's narrowing from 2.125 to 2)

Red01 · « **Reply #35 on:** January 14, 2006, 01:18:34 AM »

Just a SWAG, but with a 400, I'd say you probably wouldn't notice any difference. The smaller diameter may even help lower rpm punch.

tomacGTi · « **Reply #36 on:** January 14, 2006, 01:44:36 AM »

Correct. That public hair of difference that far back in the exhaust isn't going to matter a fart's worth of gas.

Just to give you some background: my 16v Rabbit with motorwork and is completely tuned, runs a 2 1/4" exhaust. Best guesstimate is around 140hp at the crank, stock being 123hp. This car is 1800cc. A Bandit is 400cc and comes stock with a 50mm exhaust...

For reference sake, the factory VW exhaust on these cars originally was 50mm (with the 1.8l 8v motor). These cars weren't slow in 1984 either.

I think you'll be just fine Rob.

-Randy

PitterB4 · « **Reply #37 on:** January 14, 2006, 09:13:54 AM »

Thanks, guys. If the end of the new header is close enough to the same place as my current, I'll give that a shot.

I was cleaning up those pipes last night. Quite a mess!

PitterB4 · « **Reply #38 on:** January 14, 2006, 02:59:55 PM »

The last chapter (mercifully):

I dry fitted everything today. I'm going to get a new tube made for a mid. The new header sticks back enough that I need about 1.5" more clearance at the swingarm. I'm going to get it bent just like my current highmount pipe in 2" so I can use the M4. That way I can switch over to the V&H mid and can for the track if I want and permanantly if I ever find a deal on a new can.

I can't wait to see the difference with just the headers. Man, peering into the stock collector, there's all kinds of tubing restricting flow in there. There's nuthin' in the V&H.

Thief400 · « **Reply #39 on:** January 14, 2006, 06:13:08 PM »

Hey rob when you switch over to the V&H header there is a very good chance you will have to rejet as well!! I had to when I went from my stock head pipe and cobra slipon to my Yoshimura.

Thief400 · « **Reply #40 on:** January 14, 2006, 06:23:34 PM »

Quote from: "tomacGTi"

Correct. That public hair of difference that far back in the exhaust isn't going to matter a fart's worth of gas.

Just to give you some background: my 16v Rabbit with motorwork and is completely tuned, runs a 2 1/4" exhaust. Best guesstimate is around 140hp at the crank, stock being 123hp. This car is 1800cc. A Bandit is 400cc and comes stock with a 50mm exhaust...

For reference sake, the factory VW exhaust on these cars originally was 50mm (with the 1.8l 8v motor). These cars weren't slow in 1984 either.

I think you'll be just fine Rob.

-Randy

Well sorry to stomp all over your theories but the Bandit makes about 150 Hp per liter, so if we bump it up to 1.8 L it would make 270 Hp.
To make this kind of power an engine needs air flow, both in to OUT.
So please don't compare a bandit to a vw again!

LOL

PitterB4 · « **Reply #41 on:** January 14, 2006, 06:42:45 PM »

Quote from: "Thief400"

Hey rob when you switch over to the V&H header there is a very good chance you will have to rejet as well!! I had to when I went from my stock head pipe and cobra slipon to my Yoshimura.

Yeah - I figured that. I bumped my main 2 sizes as a starting point. Thanks, Chris.

tomacGTi · « **Reply #42 on:** January 15, 2006, 12:47:46 AM »

Whatever, I made a point for comparison not a pissing contest. My experience is building car motors (VW obviously) that make power and are reliable. I'm learning about motorcycle stuff but it all is really the same: air in, air out.

I love riding my bike but I realize that it's 15 years old and starting to get very scarce (and difficult) to find parts for. It certainly doesn't make 150hp/L and I can't drive it in the snow either. I'm not going to try to turn it into a GSXR because by the time I invest that level of time, research and money into it, I could have very well just gone out and bought something twice as fast and powerful that someone's already done the hard work for.

Best of luck on your project Rob, that last one left a bad taste in my mouth.

-Randy

Nacho2059 · « **Reply #43 on:** January 19, 2006, 03:13:23 AM »

Im still new to the whole motorcycle thing and know very little about what exhaust is good and which are not so good. I have learned what everyone on the bored prefers but has anyone every run an ART Titanium slip on? Theres one on Ebay right now, new, for fairly cheep. Is it worth it and am I going to have to rejet no matter what exhaust I do end up choosing? Does anyone have suggestions for what works best with the least amount of trouble. I should also mention that this would be going on a stock 91 B-4 and that I would just being hacking off the existing can.
page with ART slip on below
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4605933839&rd=1&sspagename=STRK%3AMEWA%3AIT

PitterB4 · « **Reply #44 on:** January 19, 2006, 09:20:00 AM »

It looks like that would work. A 2" inlet is right for sure. You'd need a clamp and a way to hang it. It's a nice lookin' can. They sound good on SVs. I'm sure it would improve the note of an I4, too. I'm sure someone will correct me here if I'm wrong but I doubt just swapping the can would REQUIRE rejetting.