125-200cc Picture of the 7 transfer cylinder 125

[Motosportz]

there has been some speculation if the 08-09 cylinder really is different and has 7 transfer ports. it does. I had several people tell me the 08-09 cylinder was no different than the older ones. I think it is.

The 4 main transfers, the 2 PV transfers (like the 250) and one transfer at the top of the pic make 7...

 

[MOTORHEAD]

That's a five transfer port design; 2 main, 2 aux and a boost. The exhaust is bridged.

 

[Motosportz]

That's a five transfer port design; 2 main, 2 aux and a boost. The exhaust is bridged.

Same as the 04-07 cylinder? there are 7 holes that transfer fromt he bottom end to the cylinder...

 

[MOTORHEAD]

Those two front tholes are for the water jacket, they aren't transfers.

 

[Joe Chod]

it is the same arrangment as previuos years...........porting differnt fr sure as it has been every year since 2001
yes the front is water jacket holes bu there are 7 ports 5 in 2 out......same since eons ago

 

[MOTORHEAD]

But, they all are not transfer ports. The two that go out, the bridged exhaust port, are not "transfer" ports. Transfer ports "transfer" mixture from the cases to the combustion area.

 

[Motosportz]

My bad, i thought those were transfers to the PV like on the WR250

 

[krieg]

I'm glad you guys can sort through this... it looks like an alien vessel from the planet Mongo to me!

 

[john01]

So are they the same or is there a difference?

 

[Troy F Collins]

Hey Kelly thanks for the pics of that wonderful little barrel.....I'm looking in there and I see some porting ideas


Was the PV install straightforward swap....or was there some head scratching involved

Is that new base gasket...and was it included in the kit

Was the moly coating still on the piston..

 

[Norman Foley]

Hey Kelly thanks for the pics of that wonderful little barrel.....I'm looking in there and I see some porting ideas


Was the PV install straightforward swap....or was there some head scratching involved

Is that new base gasket...and was it included in the kit

Was the moly coating still on the piston..

Fran Bottone said my piston looked excellent, with a nice burn pattern.

 

[Motosportz]

Hey Kelly thanks for the pics of that wonderful little barrel.....I'm looking in there and I see some porting ideas


Was the PV install straightforward swap....or was there some head scratching involved

Is that new base gasket...and was it included in the kit

Was the moly coating still on the piston..

PV was EZ to install. Real EZ. Only interesting part was how the rod that holds them in comes out. It is super EZ you just need to know it. You rotate it until you find the flat spot and it pulls right out.

2 Gaskets were included in the kit, PV cover and base gasket.

Moly coating was still very much intact.

 

[Joe Chod]

Yes...rod..........undew lttle center bolt...........rotate foward about 1/4 turn until cam/detent lines up (you will feel it in your fingertips) pull out.........4 small bolts to hold PV retainers and viola.
Motorhead.........Yes it it true that the exhaust ports are not transfers but Husky has been calling it a new 5 port cylinder. That is incorrect and the cause of the confusion on the cylinder. As I said it has always had 5 transfer ports and the 2 bridged exhaust ports for 7. The design has not changed since 2001 and it has had distinct porting changes every year though. Biggest change I noticed over the years is the skirt off the bottom of the cylinder around the boot port gets narrower over the years from 2001 to now and the notch in the middle gets narrower too. No idea what this does but thats what I nticed. Agreed ther is 5 tranfers and 2 bridged exhaust. I am willing to bet the brochure that started this "unicorn" wass atypical Italian/English translation poory badly not goodly done. Who remembers some of the Huscagiva manuals of the mid 90's!
LOL. Very good Moto to insert that pic so the water jacket holes were pointed out so others were not mislead. BTW those used to be just round on older cylinders and have goten that "Flair" or chamferd elonged opening in 2004

Joe

 

[surfer1100]

I know I dug this one up, but I just wanted to verify that pre 08 motors do in fact have a 7 port design. My 07 WR does, I forgot to take a pic, but the image is vivid in my mind as i was having trouble scrubbing out Castor 927 with a toothbrush in the three separate chambers on each side. The old motors look like this.

 

[MOTORHEAD]

I'd have to see one. There have only been a couple of true 7 transfer port designs that made production and I don't recall Cagiva or Husky being one of them. But, I don't know everything, either.

I've heard guys claim that many reed induction cylinders are 6 or seven tranfer, but the two rear tunnels in the transfer area are intake boost runners.

 

[surfer1100]

I'd have to see one. There have only been a couple of true 7 transfer port designs that made production and I don't recall Cagiva or Husky being one of them. But, I don't know everything, either.

I've heard guys claim that many reed induction cylinders are 6 or seven tranfer, but the two rear tunnels in the transfer area are intake boost runners.

I am no expert. I don't even know the difference in the terminology you mention. I do know that my cylinder appears as I portrayed it, I will have to take a picture the next time I ring it. 5 or 7, either way the top end layout has changed.

 

[rasputin]

I know I dug this one up, but I just wanted to verify that pre 08 motors do in fact have a 7 port design. My 07 WR does

yep. the wre/sms 125 still have one such cylinder.

r

 

[reghusky]

wre125;

 

[MOTORHEAD]

Yep, sure is. What years have them?

Guess I have to eat crow.

 

[reghusky]

i know 2000 to about 2003 has them. i wouldn't be surprised if the wre/sm still has the same barrels.