ttr250

Joined
May 29, 2001
Messages
24
Likes
0
#1
I've just ordered a 2001 TTR 250 Yamaha and are having the following mods done before delivery. Staintune powerpipe, Knobby tyres, Airbox mods, header restictor removed, bigger rear sprocket. Is ther anything else a TTR really needs? I'll be riding mostly forest trails, beach, clay hills, flats etc.
 
Joined
May 14, 2001
Messages
52
Likes
0
#2
What is the header restrictor

My brother in law has a 1999 TTR 250 and I am wondering where the header restrictor is and how to remove it. Any other performance advice will be greatly appreciated . . .

Thanks!
 
Joined
Apr 12, 2001
Messages
25
Likes
0
#3
Obee,

One other option you might want to consider is your carb. Consider Strokers 33mm Mikuni (Pumper) carb @$350.00. I replaced my after installing their header/pipe package. A noticeable improvement, better yet its a pumper type carb. that comes pre-jetted to accommodate aftermarket exhaust systems.
If you got a lot of cash to burn, take a look at "Stroker" web site, a lota aftermarket stuff for the 250. I myself have indulged in dropping a wad of $ at Stroker.
http://www.strokerspeed.com
 
Joined
May 29, 2001
Messages
24
Likes
0
#4
Thanks for your comments / Questions guys. I've just knocked off a 12 hour shift and have to get organised to go pick up the bike in the morning. I'll post again as soon as I've talked to the people at the shop. I'm pretty sure it already has a "pumper carb" and it definitely has a restrictor fitted standard, at least here in Australia. I'll get more details and feed them back ASAP.
 

Obee

Member
Joined
May 29, 2001
Messages
24
Likes
0
#5
Vegas,
I picked up the bike this afternoon. The restrictor is actually in the pipe just before the muffler. It needs to be ground or drilled out. No actual header restrictor. They may not even have a restrictor in the States, but get him to check anyway. The airbox mod is simply removing the rubber flow channeler. I also went up 4 teeth on the rear sprocket and the knobbier tyres are a definite must in the slippery stuff. You wouldn't credit it though, we went for a 4 hour ride into the hills 5 minutes from our place and on our return had to cross 1 bitumen road. What do you reckon was coming the other way? A cop car. No licence. I think I'm OK - so they tell me anyway.
 
Joined
Apr 12, 2001
Messages
25
Likes
0
#6
Obee,
I have a few questions regarding your response. First, what's a "bitumen road"?
The second is your comment on installing a different rear sprocket, increasing by 4 teeth. What benefits to you anticipate with this increase?
I've increased my son's drive gear by one tooth (14T) on his TTR-125 and found it to be an improvement. The TTR-125 gearing for 1st and 2nd were too close and too low for his likings. This was just an increase in 1 tooth, just curious what an increase of 4 teeth would do for you.
 

Obee

Member
Joined
May 29, 2001
Messages
24
Likes
0
#7
G'day Vegas,
A Bitumen road is, I guess you would call it balck top - what you typically find on a highway - not dirt. The hassle was we hardly ever see the cops out this way. We live about 300 metres (yards) from the beach and 1 KM (600yards) from an extensive forest. The increase from 44 teeth to 48 on the rear sprocket is for more low down grunt. Being a "road trail" bike the TTR is geared for highway work as well as dirt and therefor 44 teeth is not as good for jumpimg logs, big hill climbs etc. When I took it out on its maiden bash yesterday, my mate (buddy) led me (unknowing) to an awsome hill that I was commited to before I had a chance to chicken out. The TTR handled it much better than I imagined it would. I was initially going to buy a WR, but was put off by the amount of maintenance required. The TTR so far seems pretty good. I'll know more when my power pipe arrives next week.
 

ACS

Member
Joined
Apr 17, 2001
Messages
242
Likes
0
#8
The front forks are a bit soft and heavier springs help a lot in the Aussie ones. It keeps them sitting higher in the front for better cornering and they dont bottom out as much. Get some good bars as Yamaha stockers are rubbish. Dont bother about the carb too much. Stock carb with bigger main jet is all you should need. A friend raced one for two years in Thumper Nats and only did gearing change (and you have it about right), fork springs, Big Gun exhaust and minor jetting plus removing a lot of road bits and he did prettywell. It was a great bike for trailriding and not too bad on a track. If you spend a lot on it its not worth it as the YZ/WR250F is a much better bike and you will soon spend the same or more.
 

Obee

Member
Joined
May 29, 2001
Messages
24
Likes
0
#9
Yeah, thanks ACS. I could have done with the heavier springs today. I overended it on a tree stump coming out of a bumpy right hander in the forest. I've gota staintune pipe coming this week. They reckon you don't need to change the jet???? Got any advice on how to fix a 2" tear to my seat ?? Thats about the only real damage I did, besides losing some skin. I was gonna buy a WR, but was put off by the maintenance. I'll see how this goes for a while.
 

ACS

Member
Joined
Apr 17, 2001
Messages
242
Likes
0
#10
Maintence levels on the TTR will be the same or higher than a WR/YZ F. Main reasons are the smaller oil capacity, air cooling, frame design, poorer suspension etc.

Remember you still have to change the oil, adjust the valves, clean the aircleaner, lube the chain, lube the bearings and linkages, replace disc pads, replace seals etc etc etc Thats coming up in the future.....

Dont worry though the TTR is fantastic trail bike that will last for ages. The WR/YZ F are race bikes and need to be ridden as such. The TTR is a easier to live with bike great for just about anyone and has that little magic button...:)

The TTR's and the PW's must be the biggest smilly :) bikes in the Yamaha Bike range.

For the seat get a new cover or water will destroy the foam. If you get a shock on orig price try Ballards for aftermarket one. I think the uncorked Staintune will need you to go up one main jet size at least.
 

Magellan

Lifetime Sponsor
Joined
Mar 14, 2001
Messages
193
Likes
2
#11
I've used tent repair tape on seat tears with pretty good results. Use a big enough piece and round the corners so they don't peel up as easily.
 

Obee

Member
Joined
May 29, 2001
Messages
24
Likes
0
#12
Thanks Magellan. I think I'll try something like that. A new skin (unfitted) costs between $100 - $150 here.
What are the 2 removable tubes - 1 clear that appears to come off the air filter box the other black and appears to come off the top of the head. They obviously appear to be "crap traps", but theres nothing in the manual.
 

ACS

Member
Joined
Apr 17, 2001
Messages
242
Likes
0
#13
The one on the air box is for junk to fall down that gets in the airbox. If it is on the outside side of the aircleaner I usually put a slot in it with a knife so it can drain. Nothing worse than having water sloshing around in the bottom of the air box. If its between the aircleaner and carb dont slot it just check to see that it hasnt got any junk in it. The black one off the head is a breather for crankcase fumes. It should puff and suck when you put your hand next to it. It is sometimes worthwhile to re plumb the breather to up under the tank or to the airbox as they can suck up water if you get stuck in deep water.
 

Magellan

Lifetime Sponsor
Joined
Mar 14, 2001
Messages
193
Likes
2
#14
Yeah, I keep the clear one pretty clean so that I can see if there is any water in the airbox, but putting a cut in it so it will drain sounds like a good idea as well. In any case, if you're riding and notice stuff in it, drain it! I drain both of them whenever I wash the bike. The black one is actually attached to a filter of some sort (I am guessing it's charcoal) for emmissions. Mine seems to fill up pretty quick. There's always some oil in there.
 
Joined
Oct 24, 2000
Messages
507
Likes
0
#15
The oil/whatever in the blacktube, is really stong to smell. Not saying I am sniffing my bike, but when I cleaned it the other day, headache city for me:p I think I am going to put a new seat cover on the bike by stroker and get some new decals!