Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Camilo
 
Posts: n/a
Default '82 Johnson 235 HP - looper?

I don't have the s/n with me, but I've identified this engine as a 1982
Johnson 235. It was remanufactured by a professional company sometime
in the more recent past.

This question doesn't really matter, because the engine works fine, but
I'm curious. I've been lead to believe this is a cross flow engine
because OMC didn't build loopers in the V-6's until the mid-80s? I've
kind of oriented myself to looper vs. cross flow and see an obvious
difference is the surface of the piston: cross flow have a dome sort of
shape, while loopers are essentially flat. When I look through my
spark plug holes, the pistons appear dead flat.

Just curious.

  #2   Report Post  
trainfan1
 
Posts: n/a
Default

Camilo wrote:

I don't have the s/n with me, but I've identified this engine as a 1982
Johnson 235. It was remanufactured by a professional company sometime
in the more recent past.

This question doesn't really matter, because the engine works fine, but
I'm curious. I've been lead to believe this is a cross flow engine
because OMC didn't build loopers in the V-6's until the mid-80s? I've
kind of oriented myself to looper vs. cross flow and see an obvious
difference is the surface of the piston: cross flow have a dome sort of
shape, while loopers are essentially flat. When I look through my
spark plug holes, the pistons appear dead flat.

Just curious.


It's a cross-charge if it's a 1982.

Rob
  #3   Report Post  
tony thomas
 
Posts: n/a
Default

Cross Flow.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

-
"Camilo" wrote in message
ps.com...
I don't have the s/n with me, but I've identified this engine as a 1982
Johnson 235. It was remanufactured by a professional company sometime
in the more recent past.

This question doesn't really matter, because the engine works fine, but
I'm curious. I've been lead to believe this is a cross flow engine
because OMC didn't build loopers in the V-6's until the mid-80s? I've
kind of oriented myself to looper vs. cross flow and see an obvious
difference is the surface of the piston: cross flow have a dome sort of
shape, while loopers are essentially flat. When I look through my
spark plug holes, the pistons appear dead flat.

Just curious.



  #4   Report Post  
 
Posts: n/a
Default


Camilo wrote:
I don't have the s/n with me, but I've identified this engine as a

1982
Johnson 235. It was remanufactured by a professional company

sometime
in the more recent past.

This question doesn't really matter, because the engine works fine,

but
I'm curious. I've been lead to believe this is a cross flow engine
because OMC didn't build loopers in the V-6's until the mid-80s?

I've
kind of oriented myself to looper vs. cross flow and see an obvious
difference is the surface of the piston: cross flow have a dome sort

of
shape, while loopers are essentially flat. When I look through my
spark plug holes, the pistons appear dead flat.

Just curious.


piston crown has little to do with it. port structure is more
important.
cross flow engines typically have 2 opposing ports intake/exhaust. loop
charged engines will have multiple intake ports and an exhaust port.

  #5   Report Post  
Camilo
 
Posts: n/a
Default

Thanks for the info guys. Just a matter of curiosity more than
anything else.



  #6   Report Post  
Harry.Krause
 
Posts: n/a
Default

On 9 May 2005 15:32:00 -0700, "Camilo" wrote:

I don't have the s/n with me, but I've identified this engine as a 1982
Johnson 235. It was remanufactured by a professional company sometime
in the more recent past.


I had four of these hung of a 30' Eliminator. It would run 180 mph.
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
OT 1986 100hp Johnson VRO question? Mickey General 4 March 17th 04 09:00 AM
johnson lower unit help Tom K General 0 March 4th 04 04:12 AM
Only Slightly OT Jim General 1 November 19th 03 05:18 AM
johnson, actually mercury Clams Canino General 7 October 15th 03 02:33 AM
Power lift retrofit for 48 HP Johnson? Rural Knight General 0 August 8th 03 08:30 PM


All times are GMT +1. The time now is 11:31 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 BoatBanter.com.
The comments are property of their posters.
 

About Us

"It's about Boats"

 

Copyright © 2017