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Post Info TOPIC: Gutted standard but still feels restricted :s


DTR Senior Member

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Gutted standard but still feels restricted :s
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Bought a gutted standard front pipe other day put it on over my ebay pattern but lost all topend power so cut it open (as im a fabby) and still had 1 restrictor attached and over loose so took them out and stiched it back up went for a blast 2day an still felt resticted no power atall after 6k just wants me change up a gear :s any ideas??

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Jets possibly, what pipe was it running beforehand

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Sounds like something to do with engine.

Have you tried fitting your old pipe back on?

Sounds to me like the YPVS is closed? Is it working for you?

Try pinning the powervalve open then disconnecting it then having a blast up the road.

I highly doubt that the new exhaust is completely messing up the jetting. Could be wrong.

Sounds more like the powervalve to me. But don't nderstand why the exhaust would mess up the powervalve.

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Ive had my fingers up outlet n valve is flush with top worked fine on pipe i had on b4 (ebay pattern) am on standard jetting but with a dtre carb and inlet don't think thatd matter?? Only other thing is the honeycomb stuff coating inside of expansion would that make much power loss?

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Also ive pegged pv open few times before n it just made bike really load n slugglish

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dtr200691 wrote:

Also ive pegged pv open few times before n it just made bike really load n slugglish


 Yeah the RE carb is restricted. Only has a 210 jet in there. Instead of 240.

 

Yeah. Pinning open slows the bike down in the bottom end. But it'll pick up at 8k and rev all the way up.



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defo get rid of the honeycomb stuff bud,pipe should be completely empty. all to do with pulse waves and back pressure confuse



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money killed everything....



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K pal al stay after work n rip it out 2mz see if that helps. Also done like 25,000 on standard piston an rings and nipped it up twice from forgeting to connect oil feed up lol but still starts 2nd kick n runs ok might be lacking power from that? Get a few flat spots when running big one or ebay pattern exhaust

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lol piston and rings should be changed at 10.000 miles,might be due a rebore and new piston/rings biggrin big one's are crump.... no low down power and leave 6th useless. a gutted standard sould rev too about 10500 revs and a nice spread of power. dep are nice but expensive... arrow are meant to be the shít. defo worth checking jets too as calum suggested



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+1 with funkymonkey

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Cheers will sort exhaust out 1st as ran quite well with ebay pattern on would rev out in 6th downhill so jetting n pv must be fine. Then will save up n invest on piston kit wisco is menna be best isnt it? How much oversized you fink i should go?

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Probably best off with just mitaka. A piston is a piston.

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go for wossner wiseco or yamaha the rest of the makes are cheap shiit not worth a light



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K pal nice 1

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DT200R MACCA wrote:

go for wossner wiseco or yamaha the rest of the makes are cheap shiit not worth a light


 Mitaka are mint mate what you on about???



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like fuk are they av used them before and their s h i t thats y their 40quid yam, wossner and wiseco are diffrent class get about 3times the miles before you need a rebuild



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DTR Legend

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you get 2 types of Mitaka pistons Chinese witch are **** and Taiwanese witch are alot better

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What the fûck! That's news to me. I've got a mitaka piston in mine. Solid as a rock!

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av got 1 in a 125 engine its done 300mile not even broke in yet and it looks like its done 20k miles their just turd



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well thats pissed me off as im having the mitaka in imine :(


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getting there .....



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I've done like 5K on my original bore with the mitaka. Ramp it everywhere. Always warmed up always fully synthetics and its absoltely fine. SO long as you do the same you'll be alright mate.

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That's bollócks, ignore that mate. I've done 10k on my Mitaka since last summer when i rebuilt my topend after 20k+. I literally thrash my bike 24/7 every time i'm out on it and i've had zero problems. Like Cal said as long as you WARM your bike up properly and for a good period of time before you thrash it and use a good grade of oil then it doesn't really matter what piston you use, as long as it's a genuine brand.

Point proven really is'nt it? wink

 



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thanks was getting worried arent wiseco and wossner for competition use? surely having thses pistons would mean a rebuild quicker than a mitaka one would

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getting there .....



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allso used em neva had a problem ;)

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Dan Hannam


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Yeah they are. I wouldn't reccomend anything other than a mitaka unless you're running a heavily modded/tuned engine. Just a waste of money imo. They're more pricey and take even longer to warm up so not really worth it. There's more negatives than positives. All my local garages said the same, not worth it and won't run as good because they're a high spec competition piston.

It's like putting a Ferrari badge onto a Mini Cooper lol.



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I have a wossner piston in mine, no problems it pulls my fat arse around easily. lol

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