Aftermarket Pipes

[Hammerhead]

Who still makes aftermarket pipes for the 3xv?
Bosson (here in SA) no longer make them
Will a set of Sugo pipes and collars make any difference (apart from weight) to an otherwise stock (R) setup?

[casal-fan]

There is Martin77, a member here.
His pipes, and porting giving a very interesting boost in power. Proven, and relatively cheap.

[Hammerhead]

Thanks - where is Martin based?

[Crank]

Graham Coker in Cape Town.

[jcsnook]

This topic is also being discussed here.  Some other options available...

http://pure2strokespirit.net/forums/index.php?topic=212.msg1744#msg1744

Pipes on there own will provide minimal gains.  If you want to unleash the beast within...port it and install a SUGO or other ignition system.

[ybk]

Paul has the Coker pipes on his (looks real nice):





Yahoo jp would be the only other option.

[jcsnook]

Paul has the Coker pipes on his (looks real nice):





Yahoo jp would be the only other option.

That's sexy!!

[Neal]

I had a good look at those pipes . They are beautifull , the header section looks to be hydro formed with its smooth curve from the barrel . I think he uses Engmod2 to design his pipes and that software is top notch .

[Paul]

just seen my pride and joy posted here
thanks jcsnook, wish they still looked like that now, have tarnished somewhat



Hammerhead
once you start you have to finish, and it's a process!
pipes that are longer will increase heat and make your bike run leaner, effectively
shorter pipes will reduce your rev peak HP
these are the effects on a std motor as i understand them, please correct me lads if i'm wrong.
pipes are designed around the engine design.
std pipes are designed for your engine as it is
i took this long and hard road with this 3XV posted here:
I had to upgrade carbs to SUGO kitted 36mm rare items, then i had to source carb rubbers as std could not be modified to work (i think jools helped me here??), bought expensively sourced SP airboxes, then had to back-order airbox rubbers as ones supplied were restricted (R1000, The whole lot is for sale if you like, R2000 will do), zeel CDI which didnt work for me (now with new wiring diagram subsequently issued after i bought an ignitech they are working), then i had to bin the airboxes because it wanted to breath like a horny b1^%$ on heat and would only run without airboxes, I had buy UNI pods from USA (i also got ripped off by the ebay company that sold them to me, long story).
in the process of getting it right i seized it twice, we all know how that hurts.... the wallet
HOWEVER, i won in the end and the result is a lovely pleasing bike that loves to get on the pipe and a fantastic mid range, i am pushing 30HP at 8000, 40 at 9000, 48 at 10000, 57 at 11000 (and for the record the dyno was under-reading, not our fault). is that impressive, not really when compared to my 3MA which after the use of an anglegrinder, welding rods, a drill and a zeel pushes out 64 on the same dyno (also reportedly under-reading) we have found a dynojet where we will go in future and start all over again, i quote here as it gives you an idea.
nice thing is graham coker now has all the specs to do it again so you don't have to wait months for all the calculations and other things which took ages, there is the cost with coker about R17000 if no welding or nikasil is needed for engine and pipes. then carbs and cdi etc. you could get away with a total of about R25000 - R27000

then you have the sensible option, blueprint your motor and touch up the porting to some degree and use the SP as a base, source some lekker pipes from Japan that were intended for the SP. then you might find you need bigger than 28mm carbs. although warwick did very well out of 28mm carbs. slap in a zeel/ignitech (you kind of have to as the gains in midrange are impressive to say the least) and you are sorted... about R15000! or get a 3MA.

[jcsnook]

Nothing wrong with the color of those pipes Paul!  I like the patina they get with use.  I had my NSR pipes ceramic coated...a bright silver color.  They were clear coated raw steel and didn't look too good after being scuffed in a crash from a previous owner and touched up 

As Paul explains, there is indeed a process based on what you want out of the bike.  Your standard R/RS crank is another weak link...not meant to handle the 60ish HP your wanting to throw at it.  A suitable SP crank is what you want.  I got one of the SP cranks Wayne sourced and am sitting on it until it's time to install my Martin77 ported barrels.

You will find out how quickly the costs escalate in this process    But don't let that discourage you...misery loves company! 

[rvt2002]

JL(Jim Lomas) still makes them.

http://www.rg500.com/miva/merchant.mvc?Screen=CTGY&Store_Code=R&Category_Code=TZR250

[Hammerhead]

Thanks for all the input guys!
I have contacted Mr Coker but he has not responded yet.
So - I ordered a set of Sugo pipes (and end cans) from Dan of Geckomotorcycles.
I probably wont fit them straight away.

[Paul]

Exhausts £195, race cans £75, exhaust stubs £75, big diameter SP 36mm carbs from £295, carb rubbers to suit £125

that's the start, and barrels need to be ported to suit, heads should need work to

glad to hear graham is slow with you to!!!! hehehe

[jcsnook]

Thanks for all the input guys!
I have contacted Mr Coker but he has not responded yet.
So - I ordered a set of Sugo pipes (and end cans) from Dan of Geckomotorcycles.
I probably wont fit them straight away.

Sugo's!  You should be happy with those 

[Hammerhead]

Further question if I may...
TZ250 4DP cylinders - I believe they would fit onto my bottom end (1992 R model)?
Is it a straight bolt-on, or will some machining be required?
Also- carbs and exhausts then: will I need TZ carbs or will the 36/32 mm SP model ones also work? (with the corresponding carb boots) still fit?
Will my Sugo exhaust fit at all? (I also ordered the exhaust collars by the way)