Engine Type 4 head extra holes - VW Forum - VZi, Europe's largest VW, community and sales
 


     
 

Go Back   VW Forum - VZi, Europe's largest VW, community and sales > Tech Forums > Aircooled Mechanical Tech

Aircooled Mechanical Tech A Q & A Forum devoted to Aircooled Mechanical Issues. Got a problem? Then ask in here. Please, no 'For Sale' or 'Want To Buy' ads, plugs for your 'business', links to 'for sale' ads or Ebay links to your (or your mate's) auction (use the VZi 'Classifieds' section) - this also includes thinly veiled 'What's My Car Worth?' threads and "Who Can Sell Me A . . ." posts.

Machine 7, high quality air-cooled  restoration and performance parts
Reply Post New Thread
 
Thread Tools Display Modes
Old 20-04-2017, 04:33 PM   #1
21windows
Seasoned Chat Slut
 
21windows's Avatar

VZi Member Sponsor

Trading feedback: (0)
 
Join Date: Mar 2003
Location: plymouth, south devon
Posts: 2,343
Default Type 4 head extra holes

Hi Guys
I've had a Type 4 1800 engine come in with a load of bits. The engine has been stripped back to a long block and what looks like new heads fitted, but that's as far as they got.
One of the heads appears standard but the other (see picture) has 3 extra holes in it.
1. I think is for a head temperature sender but I have no idea what the 2 and 3 are for, can anyone help.

21windows is offline   Reply With Quote
Old 20-04-2017, 07:32 PM   #2
GARRICK.CLARK+
Chat Virgin

Trading feedback: (0)
 
Join Date: Jan 2017
Location: Hoghton, Lancashire
Posts: 15
Default

Those are US spec heads.
Holes are for EGR valves , they go into the exhaust port. You need to tap them and screw a plug into them.
GARRICK.CLARK+ is offline   Reply With Quote
Old 20-04-2017, 09:48 PM   #3
21windows
Seasoned Chat Slut
 
21windows's Avatar

VZi Member Sponsor

Trading feedback: (0)
 
Join Date: Mar 2003
Location: plymouth, south devon
Posts: 2,343
Default

Quote:
Originally Posted by GARRICK.CLARK+ View Post
Those are US spec heads.
Holes are for EGR valves , they go into the exhaust port. You need to tap them and screw a plug into them.
Excellent thanks for that. I assume i will need to take the head off and remove the exhaust valves to do this will I?
21windows is offline   Reply With Quote
 
Old 21-04-2017, 02:12 PM   #4
paul_f
Seasoned Chat Slut
 
paul_f's Avatar

Trading feedback: (4)
 
Join Date: May 2002
Location: Gillingham, Kent
Posts: 2,658
Default

M10X1 with 13mm of threads. 46mm of length the the head face. I'd get someone to make you one out of 13mm hex bar

Sent from my A0001 using Tapatalk
paul_f is offline   Reply With Quote
Old 21-04-2017, 06:02 PM   #5
GARRICK.CLARK+
Chat Virgin

Trading feedback: (0)
 
Join Date: Jan 2017
Location: Hoghton, Lancashire
Posts: 15
Default

As above.
To do it properly, take the head off. while its off you can have the guides checked to see if there worn. Read up about the valve seats. They can come loose and make a mess to your chambers, piston tops too if your not fast enough to turn it off.
GARRICK.CLARK+ is offline   Reply With Quote
Old 21-04-2017, 06:10 PM   #6
paul_f
Seasoned Chat Slut
 
paul_f's Avatar

Trading feedback: (4)
 
Join Date: May 2002
Location: Gillingham, Kent
Posts: 2,658
Default

If they are new heads then there isn't any need.

You can get to both sides of the egr ports without taking the heads off, the holes go to the exhaust ports not the chambers

Sent from my A0001 using Tapatalk
paul_f is offline   Reply With Quote
Reply Post New Thread

Bookmarks


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
Forum Jump


All times are GMT +1. The time now is 05:37 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Disclaimer: For recreational purposes only, some assembly required. Any resemblance to real persons,
living or dead is purely intentional and the site admins are not responsible for direct, indirect,
incidental or consequential ridicule resulting from any defect or failure to perform. No animals
were harmed in the creation of this forum. Colours may fade over time. No other warranty expressed or implied.

volkszone.com

SupportingSupporting Brad's Cancer Foundation

 
 
© Volkszone • Terms and Conditions of use