engine RPM's

More
14 Dec 2006 06:51 #99514 by KZSteelers
engine RPM's was created by KZSteelers
I have a 1980 KZ650LTD.

When I'm cruising at 60, its turning about 5000 RPM's. This seems like its screaming.

Is this a normal crusing RPM?

Please Log in or Create an account to join the conversation.

  • The Gringo
  • Offline
  • User
  • ¡Usted no necesita otra motocicleta!
More
14 Dec 2006 07:03 #99516 by The Gringo
Replied by The Gringo on topic engine RPM's
Sounds pretty much normal. I have always thought the 650's needed a 6th gear. One thing you might try is adding one tooth to your countershaft sprocket. You will sacrifice a little out of the hole acceleration, but it makes the bike nicer at cruising speed.
Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 07:23 #99522 by OKC_Kent
Replied by OKC_Kent on topic engine RPM's
My '78 650 has the stock gearing, 16/42. It turns about 4700 rpm at 60. I think the LTD's are a bit different, maybe due to a different rear wheel?? But like Gringo said, go up a tooth on the countershaft sprocket.
Oklahoma City, OK
78 KZ650 B2 82,000+ miles

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 07:46 #99526 by madderkaw
Replied by madderkaw on topic engine RPM's
My 80 650 LTD is doing 70 at 5000 rpm's. 60 is closer to 4500. It still needs another gear though.

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 07:59 - 03 Dec 2008 11:23 #99530 by JMKZHI
Replied by JMKZHI on topic .
del
Last edit: 03 Dec 2008 11:23 by JMKZHI.

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 13:02 #99599 by freebyrd24
Replied by freebyrd24 on topic engine RPM's
My stock 650SR turns 5500 at about 55mph. I wish they came with a 6th, i love the power off the line though
- 1981 KZ1000-K1 LTD - Long term project
1075cc Kit - New Wiseco Pistons

Sold:
- 1978 kz650 SR, 4-1 Vance and Hines Full Exhaust, Dyna-S Ignition, Accel Coils and Wires

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 13:04 #99600 by mariozappa
Replied by mariozappa on topic engine RPM's
I went with a 38 tooth on the rear and really takes away the want for a sixth gear. I haven't noticed any loss off the line though.
1977 KZ650C1
and the KZ650/KZ750 Conversion ;)

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 13:18 - 03 Dec 2008 11:21 #99601 by JMKZHI
Replied by JMKZHI on topic .
del
Last edit: 03 Dec 2008 11:21 by JMKZHI.

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 15:51 #99618 by steell
Replied by steell on topic engine RPM's
JMKZHI wrote:

Hey Gringo, does your 650-CSR have the stock sprockets? I've also got the 81 KZ650-CSR, which has a 13T front & a 33T rear - it seems like that would be a world of difference from some of the others having the 16T/42T setup. Another gear would be nice. JMK.

Sounds like your bike uses a 630 chain while the others use a 530 :)
KD9JUR

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 16:44 #99635 by 77KZ650
Replied by 77KZ650 on topic engine RPM's
when my 77 was stock, it would be revving 5000 at 100km/h (about 60mph) 6000 rpm=120 km/h, 7000=140km/h ect...
Scott

Post edited by: 77KZ650, at: 2006/12/14 19:44
07 MDP Rookie of the Year
01 ZX-12R street/drag bike. 8.97 @155.7 pump gas, dot tires, no bars, no power adders. top speed in the 1/4: 161MPH

Please Log in or Create an account to join the conversation.

More
14 Dec 2006 18:02 - 03 Dec 2008 11:22 #99651 by JMKZHI
Replied by JMKZHI on topic .
del
Last edit: 03 Dec 2008 11:22 by JMKZHI.

Please Log in or Create an account to join the conversation.

More
15 Dec 2006 07:21 #99752 by steell
Replied by steell on topic engine RPM's
JMKZHI wrote:

By steell:

JMKZHI wrote:
Hey Gringo, does your 650-CSR have the stock sprockets? I've also got the 81 KZ650-CSR, which has a 13T front & a 33T rear - it seems like that would be a world of difference from some of the others having the 16T/42T setup. Another gear would be nice. JMK.

steell wrote:
Sounds like your bike uses a 630 chain while the others use a 530 :)

Yep, yer right about my chain; I don't know about the others. JMK.


I bet that your bike don't have a kickstart either :)

The 650 switched to a 630 chain, no kickstart, and a HyVo cam chain around 81, previous models had a kickstart, roller cam chain, and 530 chain. A 750 jug, pistons, and head, would bolt right on your bike :)
KD9JUR

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

Forum Links