HELP: 220 Dtsi RPM limited to 8K - Page 3 - xBhp.com : The Global Indian Biking Community

santoosh · 10-13-2009, 08:25 PM

@ all , if u cant help , dont bother posting.
Feels like ur just here to point at him prove him wrong , Make him apologise to u .
oly then will leave him.

Santa

satan69in · 10-13-2009, 08:25 PM

Quote:

Originally Posted by abhichotu.abhi

pls stop this!!

he never said that he has done 140 at 8K, he only said that he had done 140 earlier..

hes saying that his needle doesnt go beyond 8k...and he has touched 140 till now...meaning 140 kmph at 8k rpm right???

satan69in · 10-13-2009, 08:26 PM

Quote:

Originally Posted by santoosh

@ all , if u cant help , dont bother posting.
Feels like ur just here to point at him prove him wrong , Make him apologise to u .
oly then will leave him.

Santa

dude...we are telling him that his rpm meter might be wrong...if that doesnt constitue helping...then what is it..

Joel · 10-13-2009, 08:38 PM

A few reasons why an engine will fail to rev freely
1. Clogged air filter and running too rich
2. Tight tappets
3. Wrong cam timing (unlikely in this case)
4. Tight chain (if its not revving thru gears)
5. low cylinder compression
6. High viscosity in engine oil

So do the checks in stages.
Set tappets when the engine is warm always. Cold clearances will vary and thats why new engines end up in trouble like this. Always, tappets have to be mandatorily adjusted after the first 500-700kms.

Joel

rahuldevnath · 10-14-2009, 09:37 AM

Quote:

Originally Posted by manohar_manu

Dont know how your bike touches 140 at 8K RPM

Mine does 138 Kmph at 9k RPM. Even my friend's does the same. but it does go beyond 10K in other gears.
Not tried beyond 9k in 5th gear.

At 8K bike should do around 125-130.

I think its just a fault in RPM meter not going beyond 8K .
I had this problem twice (which got corrected itself in a day) . RPM meter was at 0K instead of 2k (Bike was running at that time)

I have started to believe that it seems to be RPM meter after all.

Quote:

Originally Posted by ritwik23

Does ur bike hit rv limiter when u rev it in neutral?if its the prob with the tachometer then u'l come to knw by trying to do this.i have seen this type of problem on a 220 Fi where the culprit turned out to be the exhaust.check these two things and also ur sparkplugs.

I did rev my bike on Neutral, and it did cross 8K, but touched 9K max.. nothing beyond.. I'm getting more confused.

Spark Plugs are NGK G-Power, not more than 1000Kms old.

Quote:

Originally Posted by silver_falcon_46

If your bike is able to do 140 its a clear indication that its a problem with your speedo and not your engine. If the bike is limited to 8k it will not touch 140. Thats for sure.

The nut being tight does not mean your tappets are tight. Check the play of the tappets. I'm so sure its not your tappets. Its the speedo. The extra time required to go from 7.5K to 8k is the fault. It should be going above 9k. So it works perfectly till 7.5k and then works abnormally.

I feel the bike is not revving freely, and then takes ages to reach 7.K and sycks at 8K. But my bike does 140 @ 8K RPM, looks like it's the meter after all!

Quote:

Originally Posted by abhijeet080808

You will need a ring spanner. Normal ones will slip. That nut holds the tappet adjuster thing in a particular position. It should be tight.

And, the Fastest Indian should do a lot more than 140kmph, at least on the speedo!

Got to go to SVC.. let's see what happens.

Quote:

Originally Posted by abhichotu.abhi

even if the rear brakes are not running tight , it must be problem of rear disc(not brake), it might have disformed, i am damn sure.....

I will get it checked as well, as it is I need to replace my rear disc pads.

Quote:

Originally Posted by santoosh

Set the tappets on a cold engine, dont try the circus urself. head to the SC and get it done . Go there on a weekday when ther is no crowd and get it done in a relaxed manner.

If the tappets are tight , you could feel vibes and the engine does not build revs easily.

Check the RPM meter first , rev it to 9k on neutral and if it doesn go ,do other checks like ,
clogged filter,check plug gap.
Do this and lets think of something else later.
Oh yeah , check ur chain also, if its too tight or too lose , u aint gonna go fast

Santa

As you mentioned the feelings are similar to a tight tappet settings. But it's also true that my bike does 140 at 8K.. so it looks like a RPM meter problem now.
On Neutral it does go to 9K (slightly short of 9K) but nothing beyond. Air Filter is cleaned (checked visually), Spark Plugs are NGK G-Power.. Chain is also rightly set.

Quote:

Originally Posted by satan69in

i think its impossible that your bike does 140 at 8k rpm.....its the problem with your rpm meter...

Quote:

Originally Posted by abhichotu.abhi

pls stop this!!

he never said that he has done 140 at 8K, he only said that he had done 140 earlier..

Quote:

Originally Posted by santoosh

@ all , if u cant help , dont bother posting.
Feels like ur just here to point at him prove him wrong , Make him apologise to u .
oly then will leave him.

Santa

Quote:

Originally Posted by satan69in

hes saying that his needle doesnt go beyond 8k...and he has touched 140 till now...meaning 140 kmph at 8k rpm right???

Quote:

Originally Posted by satan69in

dude...we are telling him that his rpm meter might be wrong...if that doesnt constitue helping...then what is it..

Guys.. Peace! I think I did'nt clarify.. Yes my bike does 140 at 8K RPM.. it seems to be RPM meter problem after all. But again I feel the bike is not revving freely.

Quote:

Originally Posted by Joel

A few reasons why an engine will fail to rev freely
1. Clogged air filter and running too rich
2. Tight tappets
3. Wrong cam timing (unlikely in this case)
4. Tight chain (if its not revving thru gears)
5. low cylinder compression
6. High viscosity in engine oil

So do the checks in stages.
Set tappets when the engine is warm always. Cold clearances will vary and thats why new engines end up in trouble like this. Always, tappets have to be mandatorily adjusted after the first 500-700kms.

Joel

Thanks Joel. I need to check on problem 2 and 5 if it's the case. I don't think the Oil is the problem here, Motul hasn't given me a problem so far. My tappets haven't been touched so far..

@All, Thanks guys for your support. I'm heading to SVC on either Sunday or Monday (Diwali), and would be doing a run on Roller Bench, to check first. I will keep updated on it.

rahul9985 · 10-14-2009, 09:52 AM

Quote:

Originally Posted by Joel

1. Clogged air filter and running too rich

Will the bike revv freely if running excessively lean. So lean that the engine is gasping for fuel till 4k rpm.

Quote:

Originally Posted by Joel

2. Tight tappets

I get little noise as if the tappets are loose when the engine is cold. After the engine heats the sound is gone. Anything to do with tappets?

Quote:

Originally Posted by Joel

5. low cylinder compression

Iam running very lean. The acceleration from idle to around 4.5k rpm is not gradual, progressive or linear. Shall i get the engine compression checked?

Quote:

Originally Posted by Joel

Always, tappets have to be mandatorily adjusted after the first 500-700kms.

My bike is 16000kms old and i havent got the tappets adjusted yet. Shall i get them done?

abhijeet080808 · 10-14-2009, 10:37 AM

Quote:

Originally Posted by Joel

A few reasons why an engine will fail to rev freely
1. Clogged air filter and running too rich
2. Tight tappets
3. Wrong cam timing (unlikely in this case)
4. Tight chain (if its not revving thru gears)
5. low cylinder compression
6. High viscosity in engine oil

So do the checks in stages.
Set tappets when the engine is warm always. Cold clearances will vary and thats why new engines end up in trouble like this. Always, tappets have to be mandatorily adjusted after the first 500-700kms.

Joel

Joel, what should be the clearance for a hot engine? When cold, intake is 0.06mm, exhaust is 0.1mm. (if I have not forgotten!

) What values do you suggest for a warm Pulsar engine?

honda_vings · 10-16-2009, 10:58 PM

hey guyz
just curious about valve clearance
as i m also facing the problem of hard revving in fifth gear beyond 7.5k rpm , and if the valve clearance is the culprit and if i get the valve clearance adjusted properly ,will the low and mid range also improve or only the top range(i.e. 7.5 k rpm ) will show improvement ?
thnx neways ! !

10-13-2009, 08:25 PM	#21 (permalink)
santoosh toure- r15 Join Date: Jun 2004 Location: Bangalore Posts: 1,002	@ all , if u cant help , dont bother posting. Feels like ur just here to point at him prove him wrong , Make him apologise to u . oly then will leave him. Santa __________________ 00 Kinetic Style 04 Pulsar 180 V1 06 Hyosung Comet GT 250 07 HH ZMA-R 08 Yamaha YZF-R15 10 Suzuki Access 12 Hyosung GT-650

10-13-2009, 08:38 PM	#24 (permalink)
Joel Race Concepts Join Date: Jun 2004 Location: Bangalore Posts: 1,844	A few reasons why an engine will fail to rev freely 1. Clogged air filter and running too rich 2. Tight tappets 3. Wrong cam timing (unlikely in this case) 4. Tight chain (if its not revving thru gears) 5. low cylinder compression 6. High viscosity in engine oil So do the checks in stages. Set tappets when the engine is warm always. Cold clearances will vary and thats why new engines end up in trouble like this. Always, tappets have to be mandatorily adjusted after the first 500-700kms. Joel __________________ joel@raceconcepts.in

10-16-2009, 10:58 PM	#28 (permalink)
honda_vings Senior Member Join Date: May 2009 Posts: 187	hey guyz just curious about valve clearance as i m also facing the problem of hard revving in fifth gear beyond 7.5k rpm , and if the valve clearance is the culprit and if i get the valve clearance adjusted properly ,will the low and mid range also improve or only the top range(i.e. 7.5 k rpm ) will show improvement ? thnx neways ! ! __________________ Biking can be an alternative to sex but unfortunately there is no alternative to bikes ! !

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