Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic one versus two crossover pipes? (Read 169 times)
hephaist0s
YaBB Newbies
*
Offline


I Love YaBB 2!

Posts: 3
Location: Portsmouth, NH
Joined: 05/11/18
Gender: Male
one versus two crossover pipes?
06/07/18 at 19:33:07
Post Tools
New poster, apologies if this is redundant to something. My 1982 R65 has 2 crossover pipes and the front one is rusted out. Searches for used headers usually turn up pipes with just one crossover. a) When did this change occur and why, and b) does it make a difference, and are the two styles interchangeable?
  
Back to top
 
IP Logged
 
Bob_Roller
Global Moderator
*****
Offline


  GMT -7 Hours

Posts: 8630
Location: Tempe, Aridzona USA
Joined: 11/13/06
Gender: Male
Re: one versus two crossover pipes?
Reply #1 - 06/07/18 at 21:25:28
Post Tools
I think the second crossover pipe first showed up on the '81 model year bikes .
The reason for it, was to increase midrange power .
Does it really do anything, no idea .
I don't think there any other differences between the two .
  

'81 R65
'82 R65 LS  
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
Back to top
 
IP Logged
 
Justin B.
YaBB Administrator
*****
Offline


I love my Beemers

Posts: 5730
Location: Crowley, TX
Joined: 11/08/05
Gender: Male
Re: one versus two crossover pipes?
Reply #2 - 06/07/18 at 21:40:15
Post Tools
I made a front crossover pipe from electrical conduit, 1" IIRC but I could be wrong.  Whatever size it was a perfect fit.  Cut slits in ends and attached with hose clamps...
  

Justin B.

2004 BMW R1150RT
1981 R100RT - Summer bike, NEKKID!!!
Back to top
WWW  
IP Logged
 
Tony Smith
God Member
*****
Offline


Graduate, Wallace and
Gromit School of Engineering

Posts: 1878
Location: Cairns, Australia
Joined: 07/23/13
Gender: Male
Re: one versus two crossover pipes?
Reply #3 - 06/07/18 at 21:53:54
Post Tools
Bear in mind that your mileage may vary depending on who made your header pipes.

In my case I had to cut through the cross over on my wife's R65/80, when it came time to screw it back together I had a problem.

You see the original Staintune cross over was 1" ID which is a very very hard size to find. Eventually I found a steel supplier but they would only sell me a 4 metre length (get that, an imperial ID pipe comes in metric lengths - go figure), which I didn't really want at all.

Whilst talking to the guy at the steel place he mentioend that usually the only people he ever sold 1" ID pipe to were brake rebuilders and that they, like me, were reluctant to buy 4m.

I had an idea.
I got a delivered price for the tube/pipe including postage and then rang every brake rebuilder on the Eastern seaboard of Queensland, enough of them bit so that when my 4m length arrived I lopped off the lengths the brake guys wanted and sent them by post.

And that is how I got a new stainless steel cross over pipe and a 600mm piece spare for around $20 after everything was said and done....

I think it was Monte, a former resident here, who decided that he didn't need no stinking cross over and simply cut the stubs off and welded the holes closed, I remember him reporting that he noticed no difference in performance.
  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
Back to top
 
IP Logged
 
peteremc
Full Member
***
Offline



Posts: 179
Location: Cairns, Queensland, Australia
Joined: 03/22/15
Gender: Male
Re: one versus two crossover pipes?
Reply #4 - 06/11/18 at 22:21:25
Post Tools
I've just completed almost 3,000 klms (approx 2,000 miles) with no cross over pipe and no difference here.
  

peteremc

1982 R65LS (Custom restoration complete)
2000 FLHRCI Harley Davidson Road King Classic (Hotrod)
2015 FLHTK Harley Davidson Ultra Classic Limited (The Tourer)
Back to top
 
IP Logged
 
Semper Gumby
God Member
*****
Offline


Dances with cow!

Posts: 2163
Location: Hotlanta, GA or out and about
Joined: 11/13/06
Gender: Male
Re: one versus two crossover pipes?
Reply #5 - 06/12/18 at 21:31:14
Post Tools
Single crossover for ever on my 03/1980.

Cross over close to the head is for better idling.
Cross over farther down is for better mid range.

What ever floats your boat.  I don't think it matter that much with the R65.
  

Bill Gould  1980/03 R65 When at first you don't succeed....Moo!
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint