i put a complete dep pipe on my yamaha dtr 125 and OMG i didnt think it would make such a difference 0 - 60 seems to take no time at all now (havent timed it) and it sounds like a motorcross bike really tinny and sound beutiful when you get to around 7 - 7500 RPM .
My main powerband used to be from 6500 to 9000 - 9500 rpm now is 7000 all the way to 11500 and it pulls like a horse
i havent topped it out yet as it snowed today so i was very gutted it used to go 75 mph max at 8500 RPM and would not go no more at all
I put a full dep pipe on my bike and it blew the waterpump. What you need to do is put your little finger in the spark plug hole and get a mate to kick it off if you feel the piston then you dont need new rings.
he means put your finger over the hole, putting your finger inside the engine and kickstarting it could make a mess of your finger...
No MATE! i mean put you finger inside the hole this way you get it alot more air tight, you should put your finger in as far as it will go, (usually just befor it gets stuck!!) If you simply put your finger over its not as tight.
Better method would be to use a compression tester which would give you an accurate reading.Compare readings with Yamaha's specs and you'll know if compressions tip top, average or badly worn.
a compression tester is only good if you have a manual.... which i say no one really bothers, so the reading froma compression tester dont mean ****!!!
So really sticking to the conventional way is much better, Remember finger inside not over!
why are you telling me how to test compression of the engine ive already rebuilt it once so i know all is ok and it would be a bit dumb to put your finger in the hole your right you would definatly feel the piston and make a hell of a mess of your finger.
the problem ive got now though is the dep is rusting fast :(:( is there any good ways to prevent this i know of the high tempetature laquor (dont know how to spell that) but is there any other ways to prevent the rust?
What others things could i do now exept for boring out and sprockets to make it go faster. I was thinkin power reeds but do these make a difference ?
a compression tester is only good if you have a manual.... which i say no one really bothers, so the reading froma compression tester dont mean ****!!!
So really sticking to the conventional way is much better, Remember finger inside not over.
Oh yes i forgot that Yamaha moto gp mechanics test rossi's M1 compression by the finger method.Get real! And how exactly did a DEP pipe blow your waterpump?
a compression tester is only good if you have a manual.... which i say no one really bothers, so the reading froma compression tester dont mean ****!!!
So really sticking to the conventional way is much better, Remember finger inside not over!
im still trying to figure out if this guy is on a wind up or not you cannot properly test compression with your finger ffs
compression testers are made for a reason you idiot shall we all just throw away our tools on your say so and test our bikes with our body parts
the thing that winds me up is that some people who dont understand mechanics will actualy listen to rubbish like that and possably do themselves harm
get a life you fool better still buy yourself a haynes manual
a compression tester is only good if you have a manual.... which i say no one really bothers, so the reading froma compression tester dont mean ****!!!
So really sticking to the conventional way is much better, Remember finger inside not over!
im still trying to figure out if this guy is on a wind up or not you cannot properly test compression with your finger ffs
compression testers are made for a reason you idiot shall we all just throw away our tools on your say so and test our bikes with our body parts
the thing that winds me up is that some people who dont understand mechanics will actualy listen to rubbish like that and possably do themselves harm
get a life you fool better still buy yourself a haynes manual
HERE, HERE... i agree geeza, he is starting to really fcuk me off... cant admin boot him off or something????
i think he is a bit of a pisstake he is trying to get people who dont know much about mechanics to make a mess of there body parts like on one of the forums he said put your finger on the end of the HT lead and kick it over and if it tingles its working
its that or he is just really dumb and hes heard of these teqniques and believed them
So how much difference to racing reeds make ? and what would be a good way to stop Dep from rusting
if you fit better reeds you will probably notice a small difference in acceleration and response
but dont expect it to blow your socks off its not the small changes that you make to your bike that will dramaticaly improve it but when combined with other bits is where you will see the benefit
as an example changing the reeds on a stock bike may not make alot of difference but when combined with a good pipe,jetted carb and free flowing filter the difference will be more noticable
there are a few ways of stopping your dep pipe from rusting you could paint it with a heat resistant enamel but this would mean changing its colour
you could laquer it but wether the laquer would peel under the heat i dont know ive not seen any heat resistant laquer but that dosnt mean it dosnt exist i have seen gsxr engines painted with just standard rattlecan paint which havent peeled and they get real hot so you may get away with standard laquer
if you fit better reeds you will probably notice a small difference in acceleration and response
but dont expect it to blow your socks off its not the small changes that you make to your bike that will dramaticaly improve it but when combined with other bits is where you will see the benefit
as an example changing the reeds on a stock bike may not make alot of difference but when combined with a good pipe,jetted carb and free flowing filter the difference will be more noticable
there are a few ways of stopping your dep pipe from rusting you could paint it with a heat resistant enamel but this would mean changing its colour
you could laquer it but wether the laquer would peel under the heat i dont know ive not seen any heat resistant laquer but that dosnt mean it dosnt exist i have seen gsxr engines painted with just standard rattlecan paint which havent peeled and they get real hot so you may get away with standard laquer
you can get a clear exhaust paint in arasol can or white, black, green, red... from any good motor factors normally around £7-£10 a can i think hicote make it ill have to check...
I never knew you could buy clear exhaust paint, I might need to get some. Ive read on othere forums that people with the DEP front pipe sometimes use WD40 on the exhaust, they just rub it down with the WD when they get in.
yes you can get clear... its made by HYCOTE and is called V.H.T. (Very.High.Temperture.) exhaust paint it comes in 400ml cans and cost between £7-£10... if anyone cant find it i can get it in my local motor factors
Description - VHT Paint
Stock No.
Barcode
Black, 400ml
XUK1001
5011807010012
White, 400ml
XUK1002
5011807010029
Red, 400ml
XUK1003
5011807010036
Blue, 400ml
XUK1004
5011807010043
Aluminium, 400ml
XUK1005
5011807010050
Silver Grey, 400ml
XUK1009
5011807010098
Clear, 400ml
XUK1011
5011807010111
hope this has helped you out... always glad to help a fellow member...
ive hard mix views on the dep pipes some say it works some say that it slows them down ,
does anyone have a firm piece of proof that the dep is a worthy investment im more inclined personally to go for this bad boy and match a carbon road can gp style of the same length to instead
-- Edited by Benneyboy on Tuesday 5th of January 2010 01:00:48 AM
__________________
my bikes aprillia af1 125 (striped down project ) , honda mt 50 : h100 engine rebuilt all by me along with the crank !, supermoto wheels , motorhispna swing arm , usds forks , geneli pipe , more stuff planned looking to get another dtr soon though !
