Instagram     

Go Back   PNW Moto > PNW Moto > Motorcycles

Motorcycles For topics and discussions about all motorcycle makes and models

Reply
 
Thread Tools
Sep 28th 2017, 09:10 AM   #1
 HalcyonSon's Avatar
 
  Apr 2016
  Renton

Learn Something New... Heron Heads

Reading a Cycle World article and came across these things that look like somebody made a huge manufacturing mistake. That weird looking flat face was paired with deeply dished pistons. The original idea being that it would work great with low levels of boost in aircraft engines, or shitty fuel in car engines.

Apparently it's mainly a British thing, but it's also used in nearly every Moto Guzzi. A quick internet search shows similarities to Diesel engines, though the Diesels I've worked on had a lighter dish on both the heads and pistons. Can't imagine you'd run very high compression on the one shown, because there are very few head bolts, and zero positive retention for the head gasket.



Motorcycles For The Weirdos and Wallflowers | Cycle World

Encyclopedia Hoonatica: Heron Head Engines*|*Hooniverse

Edited by HalcyonSon on Sep 28th 2017 at 09:12 AM
Reply

  PNW Moto > PNW Moto > Motorcycles

Tags
heads, heron, learn



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heads up for those that ride in the Burien area 2nd Childhood Seattle 0 Aug 4th 2017 03:16 PM
Carbon/Residue on Piston Heads? Aray Motorcycles 12 Apr 10th 2017 03:47 PM
Heads up Lagomorpha Kitsap 3 Jul 27th 2016 04:08 PM
Oak bay gravel - heads up bcj Kitsap 3 Jun 18th 2016 08:59 AM
HEADS UP - New Tar Snakes on Skyline That One Guy Portland 0 Apr 2nd 2016 04:16 PM




Copyright © 2017 PNW Moto. All rights reserved.