Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > 300/66 Series General

Notices

300/66 Series General Forum for the Volvo 340, 360 and 66 cars

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

1983 b19a

Views : 1278

Replies : 7

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jul 20th, 2018, 08:45   #1
barkster1971
VOC Member
 
barkster1971's Avatar
 

Last Online: Mar 25th, 2024 12:05
Join Date: Jun 2009
Location: Swineshead/Salford
Default 1983 b19a

Does it need lead substitute or will it be fine on normal unleaded petrol.
__________________
new engine! new car!
barkster1971 is offline   Reply With Quote
Old Jul 20th, 2018, 13:25   #2
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Today 14:09
Join Date: Jun 2007
Location: L/H side
Default

Quote:
Originally Posted by barkster1971 View Post
Does it need lead substitute or will it be fine on normal unleaded petrol.
If i remember correctly it is high compression , the remedy was two head gaskets and a thicker water pump top seal to compensate , however , unleaded has moved on now it is much better quality , so just drive it and if it does not " Pink" under load then it's fine ...
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
Old Jul 20th, 2018, 18:55   #3
360beast
Go redblock or go home
 
360beast's Avatar
 

Last Online: Today 19:11
Join Date: Feb 2012
Location: UK
Default

Hey Carl

B19a is low compression 8.5:1, my 84 360 had a b19a and it ran perfectly fine on 95 unleaded for 3k miles in the 3 months I used it.
360beast is offline   Reply With Quote
Old Jul 21st, 2018, 00:03   #4
SteveP
300 Maniac
 
SteveP's Avatar
 

Last Online: Yesterday 15:56
Join Date: Nov 2002
Location: Coventry
Default

I'd be inclined to agree - if it's not pinking I wouldn't worry about it
SteveP is offline   Reply With Quote
Old Jul 22nd, 2018, 12:08   #5
mchudd
Senior Member
 

Last Online: Jul 22nd, 2021 15:56
Join Date: Apr 2006
Location: BELFAST
Default 360

Hi mate.
My 1983 B19A is a daily driver on normal unleaded. Don't panic.
Cheers Mark.
:c ool:
mchudd is offline   Reply With Quote
Old Jul 23rd, 2018, 18:05   #6
barkster1971
VOC Member
 
barkster1971's Avatar
 

Last Online: Mar 25th, 2024 12:05
Join Date: Jun 2009
Location: Swineshead/Salford
Default info

It's nothing to do with octane rating or compression or pinking. I know it runs fine with unleaded. I am very slightly concerned with the valve seats that are now uncushioned by lead free petrol.
__________________
new engine! new car!
barkster1971 is offline   Reply With Quote
Old Jul 23rd, 2018, 20:46   #7
SteveP
300 Maniac
 
SteveP's Avatar
 

Last Online: Yesterday 15:56
Join Date: Nov 2002
Location: Coventry
Default

Well aware you were referring to valve seats, again - wouldn't worry about it, believe they all used hardened valve seats: https://www.volvoclub.org.uk/unleaded.shtml

Last edited by SteveP; Jul 23rd, 2018 at 20:54.
SteveP is offline   Reply With Quote
Old Jul 23rd, 2018, 22:19   #8
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Today 14:09
Join Date: Jun 2007
Location: L/H side
Default

Quote:
Originally Posted by barkster1971 View Post
It's nothing to do with octane rating or compression or pinking. I know it runs fine with unleaded. I am very slightly concerned with the valve seats that are now uncushioned by lead free petrol.
Alloy headed engines have hardened seats to start with , the old wives tale about valve recession applies to old cast iron heads .. and even then it takes a long long time for anything to become evident .
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
The Following User Says Thank You to Clan For This Useful Post:
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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

Forum Jump


All times are GMT +1. The time now is 20:13.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.