I have a lt230 that I am planning to rebuild this summer. I would like to know what parts for the 250r will fit the 230? Also is somebody still planning to buy that poweroll 280 kit? I would like to know about that.

 

Not many. What parts are you thinking of using?

 

I am planning of using the swingarm and a-arms. I already have an axle in from a 250r. Do you know anything about the 280 kit? I heard that somebody was wanting to do that buy 4 at a time thing. Also do you know where to get a air box or bigger carbuertor. I run my 230 with the air box lid off and the air filter isn't sealing properly so it sucks in dirt and screws up the carbuertor. Thanks

 

Hello 05LTZ400. I am the person who started the thread about the Powroll 273 kit. I called Powroll and talked to Scott. He told me that If I ordered 4 kits at a time, they would produce them. Otherwise they no longer offer anything for the 230. It's a big bore sleeve that bumps the displacement up to 273 cc's, and it comes with a high compression piston and rings (12 to 1 compression.) I want to get one and I think I have one other guy on this forumn willing to. I think his name was Bamalt230 or something like that. The price will be around $300 per kit. I am not currently ready to purchase the kit, but may be ready later this summer. I've got too many other projects going on right now. I'll keep you in mind if/when I decide to order the kits.

As far as parts from an LT250r, the swingarm will bolt up to the frame, although you will have to built a spacer in between the two front swingarm mounting holes because the 250's swing arm pivot bolt goes through the motor unlike the 230's. Also, depending on what year the swingarm is from, you'll have other mods you'll have to do. If the swing arm is from an 85 or 86 racer, you can use a stock sport carrier (85 or 86 only. 87-up sports are totally different.) If you use an 87-92 swing arm, you'll have to also use the square quadracer axle housing. If the swing arm is from 85 - 90, you'll have to modify the suspension setup quite a bit also. The 250 in those years had link system that mounts to rear of the frame. This would not be possible to do on a 230. Instead, you'd have to modify the setup to be something similar to a stock sport with a no-link setup. If you use a swing arm from 91-92 (recommended), the link system is built into the swing arm. This would probably require the least amount of modification.

The front a-arms will not bolt up either. They have different mounting points. You'd probably be better off modifying your sport a-arms. The top is simple on the sports since the upper ball joint bracket bolts to the a-arm with 3 bolts. All you have to do is build a spacer. For the bottom, that would be a little trickier, but probably easier than modifying a set from a 250. Keep in mind that you couldn't mix and match the upper and lower a-arms because the sport and 250 have different spindles, plus the front to back spacing is different.

I'm not sure about where or what carb you can buy. I've always ran stock.

Your problem with the airfilter shouldn't be happening. If you have the correct filter and your airbox isn't damaged, it should seal fine. If you need to buy a good stock airbox, let me know. I have several on parts bikes.

 

Thanks for the information. On the frame my 230 says 1985. So will the swingarm from 90-91 still work. Also with the 273 kit, can I still run pump gas like 91-91 octane. Does the kit include a stroker crankshaft? I want a bigger carb because if I upgrade the engine, I think it would run better with a bigger carb.

 

Yes, a 91-92 swingarm will still work. The 230 quadsport frame changed very little from 85 - 88. (The 89-90 250 quadsports have quite a few differences though.) You will not be able to use your stock 230 carrier. This isn't a big deal, you'll just have to use the quadracer square style. The person you get a swingarm from will probably have the carrier to go with it anyway.

I am thinking about doing the same type of thing to one of my sports that you're talking about. I've got extra quadracer a-arms and an extra 91 swingarm. I've decided not to use the a-arms because I realized how difficult it would be to retro fit them to my sport. One other item I'm worried about is how long the 250 swingarm is. It's quite a bit longer than the 230. In fact, it's actually longer than a quadzilla swingarm. I want it about 2 inches longer than the stock sport, but it's quite a bit longer than that. I'm considering shortening it. I used to have a picture of a sport that was for sale on e-bay a few years ago that had a 250 swingarm mounted to it. It actually looked a little wierd because the rear wheels stuck out so far behind the plastic. That's when I decided I'd shorten the 250 swingarm if I ever decided to use one.

With the 273 kit, you should be able to run the higher octane pump gas. I've seen 93 octane at some gas stations, that's probably what you'd have to use. The kit does not include a stroker crank. If it did, it would be considerably more expensive! It includes a new sleeve which you'll have to have a machinist install. They'll have to remove the old one, bore out the alluminum jug, and install the new bigger sleeve. By only increasing the bore and not the stroke, the engine will become more "over square" allowing it to rev higher. A stroker kit would help you on the bottom end but if anything would hurt you on the top end.

Another thing you'll want to do is get a high performance cam. Powroll and others will regrind your cam if you send them yours, as long as it's in descent shape. They build up the lobes so you'll have a higher lift and longer duration. This will probably cost $100 or so.

I agree with you on getting a bigger carb, but I'm in the same shoes you are in because I don't know what would be a good upgrade. Unless you have a custom adapter to mount between the carb and head, you're pretty much confined to the stock size carb. You can bore them out and jet them up, but that's about it. Also, as far as the air filter setup, I am planning on building a clamp on system and getting rid of the air box. That should allow me to get the most out of the little stock carb.

 

Is it hard to shorten the swingarm? I would like to put on a PRM skid plate. With the carb I saw that MalHombre could get a 32mm with new boot from Sudco. I didn't look to see if it was on their website. MalHombre also said the engine will need intake porting work done to it to have it run good.

 

hey guys, i got my motor back from the builder and i'm just a coupla weeks away from firing this badboy up. he did major intake port work to get the 32mm carb to fit and flow properly. i don't think you could get a larger carb to fit unless you get the port heavily reworked.
as far as parts swapping, the 85-86 brakes and hubs are pretty much the same on the sport and the racer. frt brake lines are different. rear line is the same. if you need new rotors, just order 250r parts for your sport and they will bolt right up.
i also found out that the gas cap for a Z250/400 is also the same size. i just got my Tusk billet gas cap and it looks suuuuweet and the price was sweeter at 19.95 from Rocky Mountain.

 

i think the 32 would be a better all around carb and a 34 would be more mid to top end. So it matters how you drive for what size carb you want.

 

I think it would be better to buy a -" swingarm than shortening it. Like one from Lone Star Racing that is -2".