Quick Question on fitting Jim Lomas pipes

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DJMac01
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Quick Question on fitting Jim Lomas pipes

#1 Post by DJMac01 » Sun Aug 13, 2017 4:09 pm

Hi Everyone

I'm just fitting a new set of lomas pipes to my RZV500R and the thickness of exhaust flange / mountings differ from original pipes. The fitting kit does not include any new bolts to accommodate new flanges, so the only way ahead seems to space out the distance with washers or remove the standard exhaust flange mounting studs and replace with bolts. Anyone else some across this niggling little problem? Thanks!

Andy500R
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Re: Quick Question on fitting Jim Lomas pipes

#2 Post by Andy500R » Mon Aug 14, 2017 8:53 am

I will let you know on Friday ?

DJMac01
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Re: Quick Question on fitting Jim Lomas pipes

#3 Post by DJMac01 » Mon Aug 14, 2017 9:39 am

Thanks Andy. Sounds like you might be fitting some JLs? I just found out from the UK supplier / agent that the spacers were missing in fitting kit - so just need to source the same spec spacers and that should be it! If you are fitting some JLs yourself, hope the spacers are included! Thanks again.

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WVWRZ500N
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Re: Quick Question on fitting Jim Lomas pipes

#4 Post by WVWRZ500N » Mon Aug 14, 2017 11:38 am

Not sure exactly what you are trying to describe here. I just fit a set this last weekend. The manifolds flange is thinner than the OEM. It required using a few washers under the nuts to keep the nut from bottoming out on the threads. No other changes were required to fit the manifolds.

I was very disappointed with the fitment of the upper pipes however. The rubber dampers provided do not provide adequate support for the weight of the pipes. I was required to make new dampers and then slot the 'L' bracket holes to let me space each pipe away from the frame.
Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
http://www.wilsonperformance.net
Member RZ500 Owners Group #573
816-377-3185
WVWRZ500N@aol.com

Andy500R
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Re: Quick Question on fitting Jim Lomas pipes

#5 Post by Andy500R » Mon Aug 14, 2017 6:07 pm

I will ask Vince to check when I speak
to him this week , fingers crossed all is well
I've been waiting 2 months and it's holding
Up my build with fabrication ect .

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Re: Quick Question on fitting Jim Lomas pipes

#6 Post by Twinsport » Fri Aug 18, 2017 4:26 am

WVWRZ500N wrote:... The rubber dampers provided do not provide adequate support for the weight of the pipes. I was required to make new dampers and then slot the 'L' bracket holes to let me space each pipe away from the frame.
Spot on! When I fitted my Lomas pipes I modified the rear frame to make the pipes fit as they should. The stock Lomas solution is crap.

/Steen
If I had a signature, it would be good.

Nashco
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Re: Quick Question on fitting Jim Lomas pipes

#7 Post by Nashco » Mon Sep 25, 2017 5:05 pm

Before I fitted the JL pipes I removed all the exhaust fixing studs and replaced them, I made new fixing studs 5mm shorter from threaded bar and no centre shoulder to stop the nut from clamping the thinner exhaust flange, no spacers or junk just engineering.

I also had a problem securing the rear of the upper pipes, all the years JL has been making these pipes they cannot get it right?

Dunny
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Re: Quick Question on fitting Jim Lomas pipes

#8 Post by Dunny » Mon May 28, 2018 8:38 am

I just fitted my pipes and had the same problems. No spacers but washers fixed the flange issue BUT upper RH pipe hits the frame. I tried to bend the bracket that holds the front of the side panel in place but still not enough room. Now the side panel won't even go close to fitting. Such a shame they can't get it right. I sent jim an email tonight, lets see if they respond with a reasonable solution.

smokamoto
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Re: Quick Question on fitting Jim Lomas pipes

#9 Post by smokamoto » Tue May 29, 2018 12:13 am

Dunny wrote:I just fitted my pipes and had the same problems. No spacers but washers fixed the flange issue BUT upper RH pipe hits the frame. I tried to bend the bracket that holds the front of the side panel in place but still not enough room. Now the side panel won't even go close to fitting. Such a shame they can't get it right. I sent jim an email tonight, lets see if they respond with a reasonable solution.
I hate to admit it but on my Lomas pipes I ”clearanced” the right upper to clear the frame.
Also no spacers included for the spigot studs so I used a bunch of washers. Motor is undergoing overhaul so now the time to install shorter studs...

Dunny
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Re: Quick Question on fitting Jim Lomas pipes

#10 Post by Dunny » Wed May 30, 2018 3:43 am

I take it you had to bash the pipe with a hammer to make enough clearance.

silverstrom
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Re: Quick Question on fitting Jim Lomas pipes

#11 Post by silverstrom » Wed May 30, 2018 10:00 am

You have to wonder why Lomas hasn't modified the pipes yet. This is a long standing issue.

AHAMAYfrank
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Re: Quick Question on fitting Jim Lomas pipes

#12 Post by AHAMAYfrank » Wed May 30, 2018 11:24 am

silverstrom wrote:You have to wonder why Lomas hasn't modified the pipes yet. This is a long standing issue.
Maybe a good reason to buy a JollyMoto set? :smt002

Frank S.
1973 Yamaha AT3 e-start, 1977 Yamaha TY250D, 1985 RZ500, 1987 Suzuki RG500CH, 1991/2014 TZR450F Yamaha, 1991TZ250B Yamaha, 1991 Yamaha TZR250R, 2005 Scorpa SY250R, 2017 Ducati SuperSport939S (for the runners)

smokamoto
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Re: Quick Question on fitting Jim Lomas pipes

#13 Post by smokamoto » Wed May 30, 2018 11:26 am

Dunny wrote:I take it you had to bash the pipe with a hammer to make enough clearance.
Yeah that was it, essentially. And moved the cheesey rear mount outward a bit to allow less "bashing".
Hurt so bad to have to do that, just another example of accessoryitis lol!

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Re: Quick Question on fitting Jim Lomas pipes

#14 Post by silverstrom » Wed May 30, 2018 3:16 pm

AHAMAYfrank wrote:
silverstrom wrote:You have to wonder why Lomas hasn't modified the pipes yet. This is a long standing issue.
Maybe a good reason to buy a JollyMoto set? :smt002

Frank S.

Exactly... I had that very discussion with someone at a well known shop Monday. I was looking at Jolly Moto pipes on an RZ500 there and the fit is perfect. Tucked in to the frame, very secure and not flopping about and hitting panels like the Lomas pipes can do. I'll be putting Jolly Moto on my upcoming RZ500 build. I have used Lomas pipes for 350 builds, but switched to Jolly Moto for the last build. Night and day difference.

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giron
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Re: Quick Question on fitting Jim Lomas pipes

#15 Post by giron » Wed May 30, 2018 4:11 pm

smokamoto I had JollyMoto and Lomas on my NS400R and my RZ350. I'm very happy with the performance of Brian's pipes with my NS400R and RZ350.

You are not that far from Oakdale
1991 3MATZR250SP
!993 3XVTZR250SP
1996 RGV250(Lucky Strike)
1994 MC28SP
1995 MC28SP
1996 MC28SP
1985 RG500(Walter Wolfe)
1984 IT490
1985 RZV500R
1985 NS400R
1985 NS400R
1997 VFR750
1992 FZR1000
RGV400
TZR500
TZR350
1990 RZ350
1971 Porsche911S

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