RZ350 Super Motard

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Smoker
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Re: RZ350 Super Motard

#1006 Post by Smoker » Thu Sep 27, 2018 1:28 am

Told JH the exhaust port duration number I measured.

He said the duration is full race, not ideal for a street bike.

The engine builder asked me if I wanted aftermarket cylinders for more power. I said let's make whatever power we can from the OEM cylinders.

Sounds like he did what I asked. :smt003

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Smoker
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Re: RZ350 Super Motard

#1007 Post by Smoker » Thu Sep 27, 2018 3:35 am

Wish I had more time.

Would like to make a custom upper triple similar to this.

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JonW
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Re: RZ350 Super Motard

#1008 Post by JonW » Thu Sep 27, 2018 4:19 am

Ohh now that is nice!
80 XT500 Supermoto!
81 RD350LC Resto
82 RD421LC Hybrid
82 RD350LC decapitation project
82 RD250LC JDM '251LC' YPVS
83 RZ350 Resto
84 RZ500 Resto
85 RZ350 F1 Resto
86 RZ350 F2 Resto
86 RZ350 F2 Hybrid

Like Watches? www.PloProf.com & www.DeskDivers.com

MK
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Re: RZ350 Super Motard

#1009 Post by MK » Thu Sep 27, 2018 8:47 am

On the YPVS models that can easily be fixed.
The trick is to let the PV not fully open. That'll create any port duration correction you need.
Bye
Martin

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Smoker
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Re: RZ350 Super Motard

#1010 Post by Smoker » Thu Sep 27, 2018 9:06 am

MK wrote:On the YPVS models that can easily be fixed.
The trick is to let the PV not fully open. That'll create any port duration correction you need.
Thanks, Martin!

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two-stroke-brit
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Re: RZ350 Super Motard

#1011 Post by two-stroke-brit » Thu Sep 27, 2018 2:02 pm

Smoker wrote:Wish I had more time.

Would like to make a custom upper triple similar to this.

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very elegant solution :smt023 .
a ton of hours machining all the parts for that assembly. :smt024
350LC,Athena 392 big bore,stock porting,swiss cheese air box,stock reeds,spec11 pipes.(now TSA big bore pipes)
She might not be pretty but she will always be a fun ride


1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600

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Smoker
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Re: RZ350 Super Motard

#1012 Post by Smoker » Wed Oct 03, 2018 10:48 am

First pipe analysis is done. Looks like peak HP will be @ 9,500 rpms.

Not enough info at this time to accurately estimate HP.

I started with Toomey dimensions, then changed them to fit the bike. Jeff modified my pipe dimensions to work better with the engine.

Should be rolling cones, soon.

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Questo vecchio rz
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Re: RZ350 Super Motard

#1013 Post by Questo vecchio rz » Thu Oct 04, 2018 2:47 am

You can't really go wrong w theToomey
dimensions. Just dynoed a set of used T5s for my Banshee...and they delivered 8 more h p. Than the FMFs I have had on her, albeiet at higher RpM...but that what wins..high RPMs?,
Could buy some Shearer in frames...but at $ $700.00 vs $275.00 for used Toomey T-5s..I'd only gain another 3.5 h.p, and lose some bottom end too...So I'm sticking with the Toomeys as a good compromise. And that's the thing about Toomeys...they deliver the best all around power...and their silencers deliver a sound that...is beyond comparison... just music to the ears
Banshee (Baja) race bike,+ 2 A Arms,L.E.Ds, Toomey, +4 stroker IMS tank, run flats.
96 GSXR SRAD, Future Yoshimura rep.
85 custom Tri-Z
RZ/YZR bike(project)
86 VFR750 RC24 Merkel replica (project)
Royal Enfield Bullet 500

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Smoker
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Re: RZ350 Super Motard

#1014 Post by Smoker » Sun Oct 14, 2018 12:44 am

Working on stainless exhaust manifold collars that won't leak.

Manifold collars need to work with the billet exhaust flanges.

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Smoker
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Re: RZ350 Super Motard

#1015 Post by Smoker » Mon Oct 15, 2018 5:29 am

Checking clearance on my pipe design @ 40 degree lean angle.

Suspension is compressed for rider weight +.

Actual wheels/tires are about 1 inch taller.

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RuZty
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Re: RZ350 Super Motard

#1016 Post by RuZty » Mon Oct 15, 2018 5:57 am

Going all the way! Don't forget that your suspension will be compressed significantly when you are leaned that far, maybe reducing that clearance in half. I would suggest that you also check that your rear shock hits the bump stop before any hard parts make contact. I recently had a violent surprise on my hybrid for overlooking that, hit a massive bump at high speed and the swingarm hard stopped on the frame.

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two-stroke-brit
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Re: RZ350 Super Motard

#1017 Post by two-stroke-brit » Mon Oct 15, 2018 1:51 pm

thats how i did my exhaust adapters with 2 o-rings per side .
no leaks yet. :smt023
350LC,Athena 392 big bore,stock porting,swiss cheese air box,stock reeds,spec11 pipes.(now TSA big bore pipes)
She might not be pretty but she will always be a fun ride


1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600

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Smoker
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Re: RZ350 Super Motard

#1018 Post by Smoker » Mon Oct 15, 2018 2:40 pm

RuZty wrote:Going all the way! Don't forget that your suspension will be compressed significantly when you are leaned that far, maybe reducing that clearance in half. I would suggest that you also check that your rear shock hits the bump stop before any hard parts make contact.
Well, there's 12 inches of travel in the front, and 10 in the back. :smt003

Only hard parts that could possibly hit are the pipes, with too much rear compression (pipes hitting the ground). Stingers won't hit the swingarm, even at full compression.

The suspension is compressed in the photos.

I won't be using much of the suspension travel on the street. Suspension will be stiffer, too. I would lower the bike, if I wasn't using down-pipes.

RuZty
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Re: RZ350 Super Motard

#1019 Post by RuZty » Mon Oct 15, 2018 7:55 pm

Looking closer I see you tied it down. As far as contact, I was referring to the swingarm hitting the frame before the shock hit the bump stop. My hybrid has almost 6 inches travel in the rear and when I hit the mother of all bumps the swingarm tagged the frame in 2 places quite hard. I wouldn't have thought it could go that far, but wish I had checked ahead of time and made sure it coudn't. I will be making a spacer for the bump stop so it can't happen again.
Did you consider crossover in the front to offset the belly's so you can move them inboard?
There are a lot of wheels in the background, how many bikes do you have? I know of your 'lamb' 350, the 'bling' 350, the motard, the 500 and the NSR.

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Smoker
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Re: RZ350 Super Motard

#1020 Post by Smoker » Tue Oct 16, 2018 1:51 am

RuZty wrote:Looking closer I see you tied it down. As far as contact, I was referring to the swingarm hitting the frame before the shock hit the bump stop. My hybrid has almost 6 inches travel in the rear and when I hit the mother of all bumps the swingarm tagged the frame in 2 places quite hard. I wouldn't have thought it could go that far, but wish I had checked ahead of time and made sure it coudn't. I will be making a spacer for the bump stop so it can't happen again.
Did you consider crossover in the front to offset the belly's so you can move them inboard?
There are a lot of wheels in the background, how many bikes do you have? I know of your 'lamb' 350, the 'bling' 350, the motard, the 500 and the NSR.
Swingarm and frame are for the same bike, so no clearance issues there.

The plan all along was to make crossover pipes. Crossed over the mockup up-pipes and downpipes. On this bike, it moves the bellies toward the front of the bike. Creates slightly more ground clearance.

Tried several different bends. Looked like crap compared to the final symmetrical header design. Decided against the novelty and slight performance advantage, for better looking pipes.

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I have the bone stock RZ500 and the RZV500 roller.
Also have a low-mileage, unmodified '87 Canadian RZ350.
And the custom WR250X.

Always appreciate your input.

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