Making a new exhaust

Digifox · 01-20-2010, 11:40 PM

Well i'm not happy with the way my exhaust LOOKS..i love the can and the way it sounds...
But after i swap out the rear end of my EX250 for a 94+ EX500 (170/60-17)

I want to do a little "bolt on" fab work.

By modding my Full Yoshimura exhaust in to a "under" or side seat exhaust

Like this guy did on his 500
http://bikepics.com/pictures/916186/

Only i want to make mine like a mid pipe in being it slips into place with out any modification to the can or header.

Also i will use softer bent tubing. that will be supported by the "old" mount for the yoshi can
and again where the Passenger pegs went(where the can will mount with a special bracket)

And seeing that the ex500 rearsets and frame form more of a "one-piece" the "mid-pipe" will fallow the body lines.

I have a rough sketch sitting in front of me right now i will finish up a few more sketches and scan it.

And whats the longer exhaust going to do to my performance and tune?

derf · 01-20-2010, 11:58 PM

First off I think you are dreaming on that rear tire. The stock ex500 has a 130/70r17 tire. The larger tire looks better, but depending on teh specific tire you choose, you may have a hard time fitting even a 140/70r17 or a 150/60r17. Even then with these larger than stock tire sizes, depending on the model you buy can rub the swingarm, chain and other parts back there.

I can pretty much guess that you wont get a 170 tire on that rear rim, and if you do you will be hard pressed to get it to seat right, and it will be very squeezed giving you a pretty extreme profile and very wierd handling.

For the muffler question, you won't loose any noticable performance, however depending on how long it is and how much back pressure you have, you might have to re jet the carbs. If the carbs were already jet'd for the yosh pipe you should be good.

Digifox · 01-21-2010, 12:34 AM

Quote:

Originally Posted by derf

First off I think you are dreaming on that rear tire. The stock ex500 has a 130/70r17 tire. The larger tire looks better, but depending on teh specific tire you choose, you may have a hard time fitting even a 140/70r17 or a 150/60r17. Even then with these larger than stock tire sizes, depending on the model you buy can rub the swingarm, chain and other parts back there.

I can pretty much guess that you wont get a 170 tire on that rear rim, and if you do you will be hard pressed to get it to seat right, and it will be very squeezed giving you a pretty extreme profile and very wierd handling.

For the muffler question, you won't loose any noticable performance, however depending on how long it is and how much back pressure you have, you might have to re jet the carbs. If the carbs were already jet'd for the yosh pipe you should be good.

The size thing worried me at first but with a little help from google.
I found this nifty chart created by EX500 riders
https://spreadsheets.google.com/ccc?...JadCGCNQ&hl=en

Whoops and thew 170...had my head up my ass its a 160/60-17 Diablo.
Plus the stock shock with be swapped out for a GSXR600 Piggy back shock

(I know the gxr works with the stock swing arm and SHOULD work with the EX500)
Plus the EX500 swing arm seems to be the same size(rough measurements)
Not bitchen, just sayin'

And for the info on the pipe THANK YOU, that what i needed to know ^_^
Hope this works out like i'm planing

BobTheBiker · 01-21-2010, 12:46 AM

you cannot run a 160 on an EX500 rim SAFELY. trust me. I know frm experience. its a 3.5" rear wheel, 150 is the MAXIMUM you can run. a 160 will just pinch and the sides will distort.

derf · 01-21-2010, 12:51 AM

Yeh I remember that chart being put together. Again buyer be ware, not all of those bikes were stock when they tried those tires so there might have been modifications done to it before they bought it.

From my own experience I put a 140 tire on my ex and it rubber the swingarm and the underseat splashguard. It also lifted the bike somewhat nto too noticible, but it does.

If you want the bigger tire you can swap a ninja 600d (I think its a 600d, you need to double check my memory) swingarm with little mod to the swingarm and it has a stock 160 or 170 rear tire.

BobTheBiker · 01-21-2010, 04:08 AM

the ZX600D may be it, but its a 160 tire. although those were also a 16" wheel too not a 17 from the factory, but you can fit 17" rims I think. th ZX1000A swingarm will fit as much as a 170 in there, and a CBR600F2 rear wheel will bolt right up, all you have to do is make spacers and put a 520 sprocket on it. as luck has it, I've actualy got a ZX1000A swingarm laying here.

karl_1052 · 01-21-2010, 09:02 AM

Quote:

Originally Posted by Digifox

The size thing worried me at first but with a little help from google.
I found this nifty chart created by EX500 riders
https://spreadsheets.google.com/ccc?...JadCGCNQ&hl=en

Whoops and thew 170...had my head up my ass its a 160/60-17 Diablo.
Plus the stock shock with be swapped out for a GSXR600 Piggy back shock

Did you even read the notes on that spreadsheet. Whoever created it was warned by professionals that a 160 will not fit and will handle like shit.

Digifox · 01-21-2010, 01:00 PM

Quote:

Originally Posted by BobTheBiker

you cannot run a 160 on an EX500 rim SAFELY. trust me. I know frm experience. its a 3.5" rear wheel, 150 is the MAXIMUM you can run. a 160 will just pinch and the sides will distort.

Well i'll just a Diablo 150/60-17....that will still look better then the 130/90-16

BobTheBiker · 01-21-2010, 03:08 PM

yeah, honestly I dont care much that the stock tire is about the size of a bicycle tire really.

but a 150 should be ok on that rim.

01-20-2010, 11:40 PM	#1
Digifox Cl4p-Trap Join Date: Nov 2008 Location: Columbus, Ohio Moto: Your mom. Posts: 734	Making a new exhaust Well i'm not happy with the way my exhaust LOOKS..i love the can and the way it sounds... But after i swap out the rear end of my EX250 for a 94+ EX500 (170/60-17) I want to do a little "bolt on" fab work. By modding my Full Yoshimura exhaust in to a "under" or side seat exhaust Like this guy did on his 500 http://bikepics.com/pictures/916186/ Only i want to make mine like a mid pipe in being it slips into place with out any modification to the can or header. Also i will use softer bent tubing. that will be supported by the "old" mount for the yoshi can and again where the Passenger pegs went(where the can will mount with a special bracket) And seeing that the ex500 rearsets and frame form more of a "one-piece" the "mid-pipe" will fallow the body lines. I have a rough sketch sitting in front of me right now i will finish up a few more sketches and scan it. And whats the longer exhaust going to do to my performance and tune? __________________ Firm as cherries.

01-20-2010, 11:58 PM	#2
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	First off I think you are dreaming on that rear tire. The stock ex500 has a 130/70r17 tire. The larger tire looks better, but depending on teh specific tire you choose, you may have a hard time fitting even a 140/70r17 or a 150/60r17. Even then with these larger than stock tire sizes, depending on the model you buy can rub the swingarm, chain and other parts back there. I can pretty much guess that you wont get a 170 tire on that rear rim, and if you do you will be hard pressed to get it to seat right, and it will be very squeezed giving you a pretty extreme profile and very wierd handling. For the muffler question, you won't loose any noticable performance, however depending on how long it is and how much back pressure you have, you might have to re jet the carbs. If the carbs were already jet'd for the yosh pipe you should be good. __________________

01-21-2010, 12:51 AM	#5
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	Yeh I remember that chart being put together. Again buyer be ware, not all of those bikes were stock when they tried those tires so there might have been modifications done to it before they bought it. From my own experience I put a 140 tire on my ex and it rubber the swingarm and the underseat splashguard. It also lifted the bike somewhat nto too noticible, but it does. If you want the bigger tire you can swap a ninja 600d (I think its a 600d, you need to double check my memory) swingarm with little mod to the swingarm and it has a stock 160 or 170 rear tire. __________________

01-21-2010, 12:46 AM	#4
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	you cannot run a 160 on an EX500 rim SAFELY. trust me. I know frm experience. its a 3.5" rear wheel, 150 is the MAXIMUM you can run. a 160 will just pinch and the sides will distort.

01-21-2010, 04:08 AM	#6
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	the ZX600D may be it, but its a 160 tire. although those were also a 16" wheel too not a 17 from the factory, but you can fit 17" rims I think. th ZX1000A swingarm will fit as much as a 170 in there, and a CBR600F2 rear wheel will bolt right up, all you have to do is make spacers and put a 520 sprocket on it. as luck has it, I've actualy got a ZX1000A swingarm laying here.

01-21-2010, 03:08 PM	#9
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	yeah, honestly I dont care much that the stock tire is about the size of a bicycle tire really. but a 150 should be ok on that rim.