Author Topic: Sphynx 300 from led (Read 15372 times)

GO OVRIT · « **Reply #15 on:** August 07, 2014, 10:09:56 PM »

Quote from: rk88r;40546

Op I believe the the 300 sphinx needs the cases bored also.

I was going to say the same thing.

christph · « **Reply #16 on:** August 07, 2014, 11:03:17 PM »

Quote from: Jerry Hall;40547

If the 300 or 310 is built to make some serious power and you are not using it exclusively for drag racing, the Paul Turner pipe may cause piston overheating problems.

I'm wondering why you say this? Is the Turner pipe only for drag racing? Would ESR's ATC5 pipe be better for the port layout of a Pro-X 330 or Sphynx 350?

GO OVRIT · « **Reply #17 on:** August 07, 2014, 11:26:14 PM »

I think he meant drag racing is a short period of time and doesn't hold the heat on the piston long enough for the failure he's referring to. The stinger size becomes a restriction at a certain power level. I don't know how to post a link, but read Bowtie316 thread about a big bore pipe project. Especially read Jerry's comment's.

Anthony0327 · « **Reply #18 on:** August 07, 2014, 11:34:26 PM »

I appreciate the feedback all. I just want an all around build. I don't want to sacrifice bottom end for top. Something that has low end grunt with plenty of mid and some top end. From the beginning I was looking at esr but as I was doing research and found led. Done right I heard all the kits run well. I have heard good thing about all the builders. I think I've made my decision. I'm going to go with esr. I have spoke to Eddy over there and he's a hell of a guy. Took the time to explain everything and make sure I understood it all. I'm pretty much brand new to the 250r world but not to two strokes. I haven't even ridden my 86 trx bike yet. I bought it pulled it apart and started fresh. It was in such bad shape I wanted to go through everything to make sure it is all done rite. There's so much aftermarket out there it's hard to make a decision but now I'm going to stick with it. If cases have to be machined I might as well go with a330-350cc. I think I'm going to stay with a stock stroke 87-89 crank and rod since I already had my crank rebuilt and ready to go. I bet one of those will make decent power, have speed and for the price you can't beat it. Plus the customer service is huge to me. Maybe I'll do a sphynx on my next build with my 88. Again thank you all for the replies.

hub97119 · « **Reply #19 on:** August 08, 2014, 12:08:32 AM »

I am running the 300 sphinx that Arlen put together. It was bored up 1mm when it was new with a dune port, 38mm carb. I haven't had a chance to try a different pipe yet as I am running a DG but I think I may try an ESR5 for the hell of it. As far as power goes I was at dunefest last weekend and was able to match up against a lot of 450's and a few banshee's. I ran through 2nd so quick that I ended up revving it in 3rd and hitting 4th with no decrease in power on any hill. I had to let up a lot of the time, but that's just me. Seems like the older you get ( 60 ) speed is not so relative anymore. Anyway hope that helps. I run race gas at over 10 bucks a gal. so that is a consideration too when you get into the higher comps. I have a stock bike also and the difference is very pronounced. My cases were not bored

2ndmoto · « **Reply #20 on:** August 08, 2014, 12:44:49 AM »

I have ran led/led for a long time. My current is a 340PV. Just bought a back up bike and it has ESR motor/pipe combo. The guy I bought it from stated it was also a 350pv. I haven't pulled it down to verify the displacement. I plan on pulling it down this weekend

That being said, the LED is by far superior. All the way through the power band the LED pulls stronger and pulls more RPM.

I'll update when I pull it down to verify its displacement to make sure I am comparing similar displacements.

Best regards
-Jason

Bowtie316 · « **Reply #21 on:** August 08, 2014, 09:39:13 AM »

If going with ESR, sticking with stock stroke crank is a good idea. Those cylinders are cast for stock stroke and are hard to set up for any low-mid power if you use a stroker crank.

Tbone07 · « **Reply #22 on:** August 08, 2014, 09:40:22 AM »

Quote from: Anthony0327;40560

I appreciate the feedback all. I just want an all around build. I don't want to sacrifice bottom end for top. Something that has low end grunt with plenty of mid and some top end. From the beginning I was looking at esr but as I was doing research and found led. Done right I heard all the kits run well. I have heard good thing about all the builders. I think I've made my decision. I'm going to go with esr. I have spoke to Eddy over there and he's a hell of a guy. Took the time to explain everything and make sure I understood it all. I'm pretty much brand new to the 250r world but not to two strokes. I haven't even ridden my 86 trx bike yet. I bought it pulled it apart and started fresh. It was in such bad shape I wanted to go through everything to make sure it is all done rite. There's so much aftermarket out there it's hard to make a decision but now I'm going to stick with it. If cases have to be machined I might as well go with a330-350cc. I think I'm going to stay with a stock stroke 87-89 crank and rod since I already had my crank rebuilt and ready to go. I bet one of those will make decent power, have speed and for the price you can't beat it. Plus the customer service is huge to me. Maybe I'll do a sphynx on my next build with my 88. Again thank you all for the replies.

That sounds like a good plan. My 350 has plenty of top and bottom, even for a 240lb rider.

Remember if you'd like better porting....you can get the ESR "engine builder" cylinder (unported), and have it sent out to you builder of choice for further porting

Either way you can't go wrong with the cost savings of ESR, quality kits as well.

Rupp250 · « **Reply #23 on:** August 08, 2014, 09:47:11 AM »

Or like Eddy probably explained to you, he can do the better porting on the package. Not just the clean up job that it comes with. What is it $100 more or something. I have ridden with several ESR bikes and they run very well. I think with my play bike I am going to do some kind of ESR setup.

etccb · « **Reply #24 on:** August 08, 2014, 10:06:49 AM »

My esr with the added eddie port ran very well. You will be good to go.

Bowtie316 · « **Reply #25 on:** August 08, 2014, 10:21:42 AM »

Another thing to think about, and it's what I am currently doing, is to just get the ESR trx7 port match and ride it for a while. That way, when you send it to LED or Neil or whoever, you have some feedback instead of just a guess on what you want them to do. If you like the power delivery of the motor, then it would just be widening up the ports and what not for flow, if it doesn't rev out enough, they could take the port timing up a little as well.

etccb · « **Reply #26 on:** August 08, 2014, 10:39:37 AM »

If you start with a trx7 and then have it opened up is why some people say gee this is better then the esr port that I got. A lot of people make a compression change at this point as well. Go trx9 and be simular to what the others will do and you dont need to pay them 400 or whatever more to do it. If you go 7 you need to know what you are going for and not be truely in your heart wanting more. That is not what it is for. I believe over half of the people that think they want 7 really deep inside desire 9. That does not mean that after a 30 min to 1 hour race/ride that the stopwatch would match the smile but it is what thay may want.
I see what bowtie is saying as far as walking to where you want to be but I am talking about a lot of the judging that goes on with a starting point of 7.

Bowtie316 · « **Reply #27 on:** August 08, 2014, 12:02:38 PM »

Quote from: etccb;40587

If you start with a trx7 and then have it opened up is why some people say gee this is better then the esr port that I got. A lot of people make a compression change at this point as well. Go trx9 and be simular to what the others will do and you dont need to pay them 400 or whatever more to do it. If you go 7 you need to know what you are going for and not be truely in your heart wanting more. That is not what it is for. I believe over half of the people that think they want 7 really deep inside desire 9. That does not mean that after a 30 min to 1 hour race/ride that the stopwatch would match the smile but it is what thay may want.
I see what bowtie is saying as far as walking to where you want to be but I am talking about a lot of the judging that goes on with a starting point of 7.

I agree, it's certainly not going to run as well with just the trx7 port match. My only comment is that my buddy has the trx9 and for me it leaves something to be desired on the bottom end. I want something that I can ride without revving as much. TRX7 is a safe bet in that it can still be ported out later, to get it right where I want it.

Maybe the 330 trx9 makes enough more low end than the 310 trx9 that it doesn't really matter, but I would rather play it safe on port timing and bring it up slowly.

Anthony0327 · « **Reply #28 on:** August 08, 2014, 12:13:11 PM »

Forgot to mention I will be running a 01cr250 ignition. Don't know if that will make a huge difference on what I'm going to have done but it's what I have. My stator and mag where so rusted it would have costed more to have it rewound then buy the cr ignition. You all have been very helpful. I'm a member on the other forum also and never get this many responses. Grant it there are "some" great guys there but there also is a lot of bickering n calling out over there. These where the responses I was looking for. People that actually have and ride these different products. Great website by the way. Thanks again for the help. I'm sure I will have some more questions as I start to put everything back together. I'm about a month away. Just need a few more parts and I'm there.

etccb · « **Reply #29 on:** August 08, 2014, 12:26:52 PM »

And that is where a power valve could become a big factor as well for you to bridge bowtie. Maybe you should start with a power valve ready bowtie if not a power valve from the get go. For like 20.00 the power valve ready leaves a door open for options and I agree as well that the cc factor will come into play with the port setup that will work for someones needs and desires for sure. I was chatting about the added port work as well above not just the sleave installation touchups.