Topic: Heavy duty primary chains, worth it and alternative sources?

[CB750R]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

[Tracksnblades1]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

Mike had/has some German primary chains for sale in the for sale tab..

[CB750R]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

Mike had/has some German primary chains for sale in the for sale tab..

Looks like he’s getting a few more of my Canadian Pesos…. Haha

[Tracksnblades1]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

Mike had/has some German primary chains for sale in the for sale tab..

Looks like he’s getting a few more of my Canadian Pesos…. Haha

Do you have a new primary tensioner/guide..?
I always replace that too..it’s 45+ years old…

[CB750R]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

Mike had/has some German primary chains for sale in the for sale tab..

Looks like he’s getting a few more of my Canadian Pesos…. Haha

Do you have a new primary tensioner/guide..?
I always replace that too..it’s 45+ years old…

Yes Honda Canada had that in stock actually. As well as all the cam chain guides.

[Tracksnblades1]

Cycle-x is on back order,

Are the cryo treated RK stock options worth it or are there alternative suppliers of the HD chains? I have my crank out for polish/balance and cylinders being bored so getting close to re assembly.

Mike had/has some German primary chains for sale in the for sale tab..

Looks like he’s getting a few more of my Canadian Pesos…. Haha

Do you have a new primary tensioner/guide..?
I always replace that too..it’s 45+ years old…

Yes Honda Canada had that in stock actually. As well as all the cam chain guides.

👍 while your there…😁

[PeWe]

Classic Cycle City on German eBay is probably the best alternative.
My K6 got them when I restored it to season 2014.
I checked the slack May 2023, 65.4mm after 44.000 km!!
I measured at least 5 times.
I think slack was just under 65mm when installed in engine not yet started. I had checked slack 15.000 km before last time, 65.4mm.
So no further slack despite minimum 104.5whp and 4-5 dyno runs with 4 WOT runs each time.
The rest cruising around no racing. Bike is a street bike.

Engine history after back on the streets 2014:
836 around 80-83whp depending on cam used.

2017 1005cc around 90whp.
101 whp 2020, 104.5whp 2021, 107.5 whp 2022.
It ran better 2023 but no dyno. Mostly midrange due to correct needles.

My CB750 K2 (mostly stock) got BMW car cam chains.
See this thread that discuss stronger primary chains.

I commented with my CCC chains  and BMW chains with photos.
http://forums.sohc4.net/index.php/topic,154183.msg1780341.html#msg1780341

The strongest there probably as the CCC chains that have correct lenght from the very beginning.

Cut 70-71 links car cam chains and rivet them correctly as 68 links need new master links with correct tool to make my mind free of worries.

The BMW car cam chains 68 links from the beginning look as CycleX chains.

I have a new set of CCC chains waiting to be installed in an engine build. I guess around 90-95whp if I stay with 890cc.

Case is milled to welcome JMR Billet block 1005cc. 
I might be curious if the pistons gas porting will change something.

Those chains will survive lots of abuse, that's for sure.

I can take photos of my new set of CCC chains compared with BMW car cam chains and old CB750 stock chains.

[CB750R]

Thanks folks I’ve emailed Mike. I might as well send him more money!! Haha

[Tracksnblades1]

Thanks folks I’ve emailed Mike. I might as well send him more money!! Haha

I bought the no cut chains from PEWE’s ccc supplier…I don’t remember them being very expensive but it’s been a few years and everything is 40% higher…didn’t take them long to get here on the slow boat either…

[PeWe]

I ordered my last set from CCC December 2022, €308 with shipping.
Price here within EU has  at least 20%VAT, maybe 25%.

[Don R]

 Has anyone upgraded their primary chain tensioner?  $165 for a new cycle X with an upgraded spring.