Author Topic: Two stroke with transparent cylinder heads  (Read 1094 times)

0 Members and 1 Guest are viewing this topic.

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 14,806
  • Northern Virginia
Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,856
Re: Two stroke with transparent cylinder heads
« Reply #1 on: January 02, 2022, 06:58:19 PM »
Pretty cool...thanks for posting.
If it works good, it looks good...

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Two stroke with transparent cylinder heads
« Reply #2 on: January 03, 2022, 06:27:17 AM »
Fire in the hole !  Neat seeing what really goes on in there.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,394
  • Central Texas
Re: Two stroke with transparent cylinder heads
« Reply #3 on: January 03, 2022, 07:59:14 AM »
Very cool!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,023
  • Saver of unloved motorcycles.
Re: Two stroke with transparent cylinder heads
« Reply #4 on: January 03, 2022, 08:34:18 AM »
 That's hilarious, and brave.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline RAFster122s

  • I feel like a really really
  • Really Old Timer ...
  • *******
  • Posts: 12,423
  • SOHC4 member # 2605
Re: Two stroke with transparent cylinder heads
« Reply #5 on: January 03, 2022, 09:31:56 AM »
Tested to failure. ProjectFarm on YouTube did a similar thing with Briggs & Stratton engine in a mower quite a while ago...his was very crude...
David- back in the desert SW!

Offline City Boy

  • Hot Shot
  • ***
  • Posts: 689
Re: Two stroke with transparent cylinder heads
« Reply #6 on: January 03, 2022, 10:26:00 AM »
Maybe too early in morning for me but wouldn't this engine have about 0 compression yet it runs.
'52 Kiekhaefer Mercury Rocket Hurricane KG4H
'70 750/RC 1000 Original Owner
'83 1100F

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Two stroke with transparent cylinder heads
« Reply #7 on: January 03, 2022, 12:51:55 PM »
 It may be sealed well with the same approx volume and squish area to run but I will say that on the road it probably would not be much of a heat sink to cool well if its taken out at all.

Offline MauiK3

  • A K3 is saved
  • Old Timer
  • ******
  • Posts: 4,328
  • Old guy
Re: Two stroke with transparent cylinder heads
« Reply #8 on: January 03, 2022, 06:09:25 PM »
How much heat does that plastic need to endure?
Seems like it would fail from heat.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline RAFster122s

  • I feel like a really really
  • Really Old Timer ...
  • *******
  • Posts: 12,423
  • SOHC4 member # 2605
Re: Two stroke with transparent cylinder heads
« Reply #9 on: January 04, 2022, 01:41:13 PM »
I think heat is what caused the plugs to fail and pull out of the head. They came out with the threads full of plastic... I guess they could have failed from fracture of the plastic but given how the dome was burning I think it was heat. Likely Lexan used for the compression dome and plugs, either that or acrylic which is readily available. Lexan would be my choice for a stunt like that.
David- back in the desert SW!