Author Topic: 363 sphynx build questions???? (Read 18418 times)

rockstar · « **on:** February 12, 2016, 09:28:52 PM »

Ok 250r brethren my sphynx build is finally able to come to fruition, I've traveled a long road with my R and finally able to put a 4 stroke murderer in her.... With that said I have some questions on the transmission as far as reliability goes, options and what has everyone done and experienced in that department??? I'm lookin for the Neil to chime in cause I'm dead set on him for my build. What issues should I be aware of with this build, what problems if any did everyone come across? I just want to cover all aspects of this so all your input would greatly be appreciated as my girl been sitting idle in the garage for the past year waiting patiently to sing again and destroy 450's again..... Thanks for all your input long live our 250r passions....

Skeans1 · « **Reply #1 on:** February 12, 2016, 09:38:18 PM »

Quote from: rockstar;64507

Ok 250r brethren my sphynx build is finally able to come to fruition, I've traveled a long road with my R and finally able to put a 4 stroke murderer in her.... With that said I have some questions on the transmission as far as reliability goes, options and what has everyone done and experienced in that department??? I'm lookin for the Neil to chime in cause I'm dead set on him for my build. What issues should I be aware of with this build, what problems if any did everyone come across? I just want to cover all aspects of this so all your input would greatly be appreciated as my girl been sitting idle in the garage for the past year waiting patiently to sing again and destroy 450's again..... Thanks for all your input long live our 250r passions....

Does Neil do cp cylinders? When I had my sphinx I ran a stock cyroed transmission. Only issue I had with the cylinder was an easy fix the two pipe plugs I had to retap.

rockstar · « **Reply #2 on:** February 12, 2016, 09:53:51 PM »

Honestly I cant answer to Neils stand on the sphynx but I'm hoping for him to work his 250r magic on my build.... Thanks for responding so quickly.... What pipe, carb, etc did everyone run with there build, obviously I know ultimately the builder "hopefully Neil" will steer me in the right direction but what worked for everyone here...

Skeans1 · « **Reply #3 on:** February 12, 2016, 10:04:47 PM »

Quote from: rockstar;64510

Honestly I cant answer to Neils stand on the sphynx but I'm hoping for him to work his 250r magic on my build.... Thanks for responding so quickly.... What pipe, carb, etc did everyone run with there build, obviously I know ultimately the builder "hopefully Neil" will steer me in the right direction but what worked for everyone here...

I ran a custom Shearer in frame "torque" pipe and 40mm smart car, the whole set up ran extremely well together. You may give Pete at Hybrid Engineering a call as well.

rockstar · « **Reply #4 on:** February 12, 2016, 10:26:46 PM »

I've read many good things about Pete and would definitely consider him as well, I'm lookin for a strong mid to top performer and open to options....

rockstar · « **Reply #5 on:** February 12, 2016, 10:30:02 PM »

I'm not opposed to other builders and would appreciate input on others, I've had Neil locked for my build for a few years from all I read also he's not to far from the coal hills of Pennsylvania where I reside... But any and all information and views are greatly appreciated...

Skeans1 · « **Reply #6 on:** February 12, 2016, 10:33:40 PM »

Mid to top is what my sphinx I sold was setup for and like I said it ran extremely well it was a hybrid engineering motor.

Rupp250 · « **Reply #7 on:** February 13, 2016, 12:52:07 AM »

I don't believe Neil has much experience with the Sphinx. Not knocking him though. You may want to talk to him on the phone and get his feeling towards it. Bubba says he is booked out for several months. Try Mat Shearer for porting and Pipe.

I ran a stock trans on mine and it held up to drag racing and duning. Ticking time bomb though in my opinion. I would get it cryo'd and talk to LED for a 2nd gear. $.02

Piediddy · « **Reply #8 on:** February 13, 2016, 08:14:40 AM »

id send it to Pete at Hybrid, Neil is more of a MX guy and not sure how much he's done with CPI cylinders. Don't short on the bottom end and transmission. Do it rite the first time, it's not fun looking down and seeing pieces of 2nd gear laying in the sand. I have a Sphynx built by K&T(not my first choice) but I bought it 2nd hand. Gonna run Pwk 40.5 and LED 350G pipe. I had 2 Pumas 1 built by Pete and 1 built by Packard. Those 2 are the only ones I'd use for a CPI Cylinder.

The_Steve_Man · « **Reply #9 on:** February 13, 2016, 09:36:54 AM »

Arlen would be good too. Along with one of his pipes. Complete package

rk88r · « **Reply #10 on:** February 13, 2016, 09:53:06 AM »

I have one of Arlen's 363's, it rocks. It's the only cpi cyl that I've had though. It's not a great overrev motor, but it sure has pull. If you ride long steep hills it would work great. Pulling third or fourth for a long time makes for a good climber.

rockstar · « **Reply #11 on:** February 13, 2016, 02:28:13 PM »

Thanks for all the quick response, its appreciated... I would definitely like to have a bullet proof transmission and bottom end, I'm open to all possibilities on builders and love to hear input... Pete would be top list if Neil is out of the question but I'm also open to Arlen.... My main objective would be reliability first and 450 destroyer coming in a very close second haha... I'm running a ported 89 250r with 38 air Stryker, esr cage and reeds, billet intake etc bunch of little things and hang and run down some nice 450s but as we all know we ALWAYS need more... Would Pete be able to build everything start to finish, meaning I send him my motor and he orders what I need or should I order parts and send everything to him.... Obviously its best to just talk to him or whoever said builder should be, but just tryin to get a feel for what's going to need doing.... What should I be lookin to spend on tho build, I'm sure 3000 plus is in the cards? Thanks again btw I just sold my banshee to build my girl haha...

Tbone07 · « **Reply #12 on:** February 13, 2016, 02:39:09 PM »

Neil has done a good amount of CPI cylinders, including a couple Pumas I think. I would definitely try to contact him and gather his thoughts.

I run a full Baldwin trans in my 350, rock solid and shifts like butter. LED 350G pipe, 38mm PWK. I would think you'd use at least a 40mm for a mid-top build though

Skeans1 · « **Reply #13 on:** February 13, 2016, 03:13:53 PM »

Quote from: rockstar;64551

Thanks for all the quick response, its appreciated... I would definitely like to have a bullet proof transmission and bottom end, I'm open to all possibilities on builders and love to hear input... Pete would be top list if Neil is out of the question but I'm also open to Arlen.... My main objective would be reliability first and 450 destroyer coming in a very close second haha... I'm running a ported 89 250r with 38 air Stryker, esr cage and reeds, billet intake etc bunch of little things and hang and run down some nice 450s but as we all know we ALWAYS need more... Would Pete be able to build everything start to finish, meaning I send him my motor and he orders what I need or should I order parts and send everything to him.... Obviously its best to just talk to him or whoever said builder should be, but just tryin to get a feel for what's going to need doing.... What should I be lookin to spend on tho build, I'm sure 3000 plus is in the cards? Thanks again btw I just sold my banshee to build my girl haha...

Yes that's how he did my last sphinx before I jumped into a puma. Give him a yell that last motor I had pulled extremely hard and if you look through my build thread you can see the difference in a sphinx to a puma and some of the pipes.

havinnoj · « **Reply #14 on:** February 13, 2016, 05:03:40 PM »

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