TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: Hutchracer on November 04, 2019, 04:11:00 PM
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So I have an 86 TRX250R and I am looking to do a 350cc Big Bore on it.
I am considering the BDT Pro-X w/the BDT Pro Porting & Flow.
I am basically building this for the dunes and would like to have enough power to drag with the boys.
Just curious if any of you guys have ran this set up. I see the Pro-X kits have better reviews than the ESR kits. I am wanting make sure I spend my $ getting the right kit. I've seen that CT sells a kit too but haven't seen much info in comparison to the BDT kit.
What do you guys think?
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You wont see hardly any pro-x kits chosen over esr kits today. I would look into the esr ceo kits.
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CT racing Prox-X cylinders are not available (new) at this time. I’d suggest a CP industries cylinder if you have the funds. ESR cylinders are a great buy. Get the cylinder ported by Selvey, LED, BHP, Hybrid or Jerry Hall.
What engines are the guys running that you are racing against?
Joe
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I think you should absolutely stay away from BDT! I had a ESR cylinder ported by BDT and it was nothing but trouble. I had Hybrid engineering work it over and now it is a monster. I recently had Hybrid build a 390 for me and it is fantastic. I went with the ESR cylinder again and can't complain.
Loren
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CT racing Prox-X cylinders are not available (new) at this time. I’d suggest a CP industries cylinder if you have the funds. ESR cylinders are a great buy. Get the cylinder ported by Selvey, LED, BHP, Hybrid or Jerry Hall.
What engines are the guys running that you are racing against?
Joe
I agree with Joe on this. Plus why pay extra to a guy that charges for services he does not perform. Stay with builders that don't have a cload over them.
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I was also looking at the LED/ESR kit too. The ones where Arlen @ LED takes the ESR head and does work on that.
Yeah I just want to make sure that I am happy with the end result of the build.
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What part of the country are you located
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I live in the PNW just south of Seattle
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Ok I'm in Washington too. I would definitely look at Arlan(led) or Pete(hybrid engineering). They are both in pnw. So easy to get motor to them.
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I live in the PNW just south of Seattle
You came to the right forum...lots of PNW guys here. Not me though. I’m from Ohio. I did make it out to Winchester Bay for our ORG meet up ride.
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Yeah I was looking at LED prior because I know the stuff he builds is always good.
Does Hybrid Engineering have a website or anything? I did a quick search on my phone and it just brings up posts on forums but no website info.
Unless I'm totally over looking it.
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I just picked the quad up last week from my brother.
It's an 86 with a few things done to it. I got it with Silver Maier Plastics, a Laeger's Anti-Vibe Stem, a set of new extended A-Arms that aren't installed yet, a pipe and silencer which have no markings on, and a basic K&N cone filter in the air box. Oh yeah he also gave me a brand new still sealed in the box Hot Rods complete bottom end kit for it.
I pulled the carb to clean it and check the Reed Cage and noticed that the piston had a crack in the bottom of the skirt.
I already had plans to build it but I figured I'd do the biggest displacement I can where I can still use the Brand New bottom end kit I got.
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Pete is in washugal( spelling). No he doesn't have a website or anything. He does do top notch work. He built my puma motor this year. I'm very happy with his work. A friend just had one done by Arlan. It is a good motor too. I would think Pete would be able to get one done for you quicker. Being a bit smaller then led
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I'm trying to figure out if should end up just ordering up a 350cc kit from ESR and then just sending it out with the cases to Hybrid Engineering now.
Does he do porting work also? I've heard that ESR doesn't exactly do a proper "Porting" more or less just cleans up the ports.
I want to get a nicely ported motor so that it is making some good HP. I also know with a 350 I will need to have the cases done to match the cylinder.
I wish there was some way to get ahold of Hybrid Engineering to get pricing and go over what I am thinking on my motor.
Since you have had a motor done by him do you know of how to contact them?
Washougal is a couple of hours away from my house. So taking him the motor is no issue but I want to be able to talk pricing first.
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Yes Pete does the porting in house
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I’m sure you’ll be getting a pm with Pete’s number
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Pm sent
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Thank You sir!
Cant wait to hear what he has to say.
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He does all the machine work and porting
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Pete is a really good guy to work with. He takes pride in his work and will tell you straight up what works and what doesn't. He will also tell you what to not waste money on.
Loren
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Pete is a really good guy to work with. He takes pride in his work and will tell you straight up what works and what doesn't. He will also tell you what to not waste money on.
Loren
I've been talking with him for the last hour and a half. Just like you're saying he is very informative. He is telling me what is going to work best for what I am looking to do and also telling me what is a waste of money for the build that I want. I am super excited to start getting stuff ordered up and getting it down to him!!!
Thanks again for giving me his info and letting me know that there is such a good builder here in the PNW!!!
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You will be happy with his work. Keep us informed on your build
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So after talking with Pete for a while once I can get my hands on a ESR 370 Engine Builder Cylinder kit I'm going to have him build me a 391cc. He said for the $ it is the route that he would go for cylinders. I'm going to order up a 4mil Stroker Crank this week and then basically just waiting until Eddie gets caught up and can make me a cylinder.
Eddie said he is a little behind on stuff but Pete said give him a few weeks and he should be able to produce a cylinder. Most likely going to put my YFZ 450 up for sale now as that was just a temporary ride until I could find a good 250R. Granted I pretty much built that thing more than I really needed to. So instead of a 50hp 4 stroke I should have in the neighborhood of 75-80+ hp out of the 391.
I'll be running a 40.5 PWK carb and a LED 350G exhaust. So I'm hoping to be in the mid to upper 70s for HP.
I can't wait to get this build moving along!!
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I have the 391 built by Pete. He built mine to be a torque monster. Make sure you tell him the type of riding you do and he will port the cylinder accordingly. I ride mine in the dunes and love dropping in to tree holes so it works perfect for me.
Loren
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So after talking with Pete for a while once I can get my hands on a ESR 370 Engine Builder Cylinder kit I'm going to have him build me a 391cc. He said for the $ it is the route that he would go for cylinders. I'm going to order up a 4mil Stroker Crank this week and then basically just waiting until Eddie gets caught up and can make me a cylinder.
Eddie said he is a little behind on stuff but Pete said give him a few weeks and he should be able to produce a cylinder. Most likely going to put my YFZ 450 up for sale now as that was just a temporary ride until I could find a good 250R. Granted I pretty much built that thing more than I really needed to. So instead of a 50hp 4 stroke I should have in the neighborhood of 75-80+ hp out of the 391.
I'll be running a 40.5 PWK carb and a LED 350G exhaust. So I'm hoping to be in the mid to upper 70s for HP.
I can't wait to get this build moving along!!
You're going to be a happy camper. Pete is responsible for some of the best running 250r engines in the business. Especially when it comes to dune/drag setups.
Keep us posted! There haven't been many engine build threads on here in awhile. So we'd love to see one!
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As soon as I can get the 370cc Cylinder from Eddie @ ESR I'll be driving it down to Pete.
I'm going to try my best to be able to have it finished up for this coming season of riding. Our first trip is usually at the end of March.
I'm sure it wont be 100% completed by then but I would love to have the motor at least done and hopefully dyno tuned.
It is a lot to ask between now and then but that is what I am shooting for. There are a few parts that aren't exactly cheap though.
I think besides the obvious cylinder and case work, the Exhaust and the CR Ignition are going to be the bigger expenses I think.
Then it will be the basics like a high flow water pump, clutch basket and clutch, and a few other goodies.
I wont lie I haven't been this excited to start a build in a long time!!
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There is no need for high flow water pump. I good radiator is good insurance. I ran my puma at the meet up in August. With nothing special. Just stock pump and rad. I do have a afco in it now for added insurance.
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Yeah I agree with Gene on the water pump and radiator. If tuned correctly Pete's engines run pretty cool. 185° is about normal on my 391.
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Good to know I do have an Aluminum Radiator.....to replace the stock one.
What's an Afco? I could be totally brain farting here it has been a long day for me. Haha
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AFCO is just a brand of aluminum radiators like PWR, CBR, etc.
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Pete is the best builder there is imo my 363 4mil sphynx he built is still running on the same plug I broke in with 3 years ago and I never have to touch the jetting the thing just runs so good only time the temp ever got over 190 degrees was when I had to drag my broke down Packard performance built yfz502 3mil out of the dunes with it on a 95 degree day other then that it runs 180 all day on the hottest days unlike my BHP built 310R that’s burned up 2 top ends with in 4 tanks of fuel ran through it