Go Back   DIY Go Kart Forum > Building Plans And Advice > Photo Gallery & Project Log

Notices

Reply
 
Thread Tools Display Modes
  #81  
Old 05-13-2019, 07:46 PM
itsid's Avatar
itsid itsid is offline
Moderator
 
Join Date: Jul 2013
Location: Ruhrpott [Germany]
Posts: 9,902
Thanks: 1,348
Thanked 4,197 Times in 3,141 Posts
Default

Stock rod over revved..

the reason why we ask to install billet con rods as soon as you rev more than the stock valve springs allow for

Too bad!

'sid
__________________
Jokes about german sausage are the wurst.
Reply With Quote
  #82  
Old 05-14-2019, 03:20 AM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

Yes, the standard connecting rod wedged at the bottom, and broke. I installed an intake valve 27mm camshaft with an increased lift of 1mm. Raising the power connecting rod could not resist. Need to put the rod ARC.
Attached Thumbnails
EB5839F2-F9E0-4E76-B3E5-8C71C44539A6.jpg   DCE50CDD-D497-42CC-B4CC-DD26439E5BC7.jpg  

3C4BB24B-B5E1-430A-8B54-45231848BAF6.jpg   412DC6AE-2F35-4D71-8B6F-5854A648447C.jpg  

12D228CE-1FCE-4712-BEB4-50D024B00FD4.jpg  
Reply With Quote
  #83  
Old 05-14-2019, 06:46 AM
J.S.@SMS J.S.@SMS is offline
Here 8am-? Mon-Fri
 
Join Date: Sep 2018
Location: Weeki Wachee Fl.
Posts: 469
Thanks: 51
Thanked 85 Times in 75 Posts
Default

That sucks, but it could have been worse (rod hitting you on the way out). At least you weren't injured. But the block is done. The rod took out part of the cylinder and cracked the sleeve, from what I can see. And the crank looks pretty bad.
__________________
If a picture is worth a thousand words, what is a video worth?
Reply With Quote
  #84  
Old 05-24-2019, 06:40 AM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

I recently ordered the ARC 6270 and aluminum valve rods (OEM honda gx200 ut2).
Reply With Quote
  #85  
Old 07-20-2019, 02:56 AM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

please tell me what oil viscosity should be used for ARC Rod 6270 Honda/Clone?
Reply With Quote
  #86  
Old 07-20-2019, 02:17 PM
Kartorbust's Avatar
Kartorbust Kartorbust is offline
Senior Member
 
Join Date: Feb 2016
Location: Lincoln, NE
Posts: 2,684
Thanks: 578
Thanked 729 Times in 613 Posts
Default

If it's not in the manual for the rod, then use what the manufacturer recommends for the engine.
__________________
In the age of information, ignorance is a choice.
Reply With Quote
The Following User Says Thank You to Kartorbust For This Useful Post:
chados (07-20-2019)
  #87  
Old 07-20-2019, 11:58 PM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

Quote:
Originally Posted by Kartorbust View Post
If it's not in the manual for the rod, then use what the manufacturer recommends for the engine.
The instructions recommend a medium weight oil, which is a 30w with a high zinc content.
My motor is used in races at speeds above 7000 RPM. I think we need oil with a viscosity of 10w30. Redline, Amsoil or Valvoline?
Reply With Quote
  #88  
Old 07-21-2019, 10:33 AM
Kartorbust's Avatar
Kartorbust Kartorbust is offline
Senior Member
 
Join Date: Feb 2016
Location: Lincoln, NE
Posts: 2,684
Thanks: 578
Thanked 729 Times in 613 Posts
Default

10w30 should be fine. In the summer time, it still acts as a 30 weight. In the winter it's a 10 weight. Should be fine.
__________________
In the age of information, ignorance is a choice.
Reply With Quote
The Following User Says Thank You to Kartorbust For This Useful Post:
chados (07-28-2019)
  #89  
Old 07-28-2019, 08:11 PM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

Good afternoon members of the forum,

Please tell me whether it is reasonable to use Autolite AR3910X candle.
My compression ratio is now around 10.5: 1, the combustion chamber is 14 cc. thin steel gasket, but the piston is not flat-top.
Reply With Quote
  #90  
Old 08-03-2019, 03:02 AM
chados chados is offline
Member
 
Join Date: Jun 2018
Location: Siberia, Russia
Posts: 66
Thanks: 16
Thanked 16 Times in 12 Posts
Default

Hello dear forum users, I had a question about the compression ratio of my Honda clone.

Now I have a 14cc combustion chamber
The standard piston is not a flattop.
Head gasket thin steel.

according to my calculations, the compression ratio is 10.3 - 10.5: 1

I want to install a flattop piston, but then the compression ratio will be already 13: 1, I'm afraid that this is of great importance.
Do I need to install a thick head gasket?
or will the motor withstand this compression ratio? I use the motor on karting in races, the engine speed reaches 7500 rpm.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:22 PM.