Print Page - removing the head on a 1978 B1800 4 cylinder

Title: removing the head on a 1978 B1800 4 cylinder
Post by: Mike D on February 08, 2006, 10:25:32 AM

anyone know how to do this? i cant work out how to remove the tension from the cam chain :xconfused ... if anyone has a haynes manual they could scan or knows how to do it any help is much appreciated :)

Thanks,
Mike :)

Title: removing the head on a 1978 B1800 4 cylinder
Post by: Martiny on February 08, 2006, 12:45:07 PM

Got an E and B series manual at home for my 323 s , I will have a look tonight.

Title: removing the head on a 1978 B1800 4 cylinder
Post by: MikeLMR on February 08, 2006, 12:51:01 PM

well after scratching around on the net (wikipedia for starters) I think its a VC engine (1769cc\'s is that right ?) and it\'s in the same family of engines as the one I have in the 323.

http://en.wikipedia.org/wiki/Mazda_C_engine
http://en.wikipedia.org/wiki/Mazda_B-Series_%28International%29

I can\'t find anything on the timing chain on a VC but this is what I found for the smaller engines ... it might be similar ?

The timing chain tensioner is behind a small cover held with two bolts on the main timing cover.

If you like I\'ll have a look in my Mazda workshop manual for the 323 tonight. It might explain things a little better ?

Title: removing the head on a 1978 B1800 4 cylinder
Post by: Mike D on February 08, 2006, 04:28:30 PM

Thanks chaps :)

Mike, it is a vc as far as i know :)

Cheers for the info

Mike

Title: removing the head on a 1978 B1800 4 cylinder
Post by: Richard on February 08, 2006, 09:46:57 PM

Hi Mike,
As suggested above there is a cover with 3 bolts situated below the water pump, behind which sits the tensioner.
The tensioner is held on by two 10mm bolts and is sprung loaded as well as relying on oil pressure. The easiest way to get it out is to stick some rags down the into the timing chain cover and then undo the 2 bolts and try to monouver it out by fingertip.
To replace it - compress it in your hand or in a vice and then either place a cable tie around it or use a single srtrand of copper wire to hold it together while you bolt it back in. Once the timing chain is back in position and the tensioner bolted up , relase the wire/cable tie.
I have an old stock engine gasket set if your interested

Rich ;)

Title: removing the head on a 1978 B1800 4 cylinder
Post by: daverey on February 08, 2006, 10:45:30 PM

Hi Mike
found these on ebay, thuoght they could be of help in future
http://cgi.ebay.co.uk/MAZDA-B1600-B1800-B2000-B2200-72-86-WORKSHOP-MANUAL_W0QQitemZ8035729795QQcategoryZ18420QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.co.uk/Mazda-Pick-Up-B1600-B1800-B2000-Haynes-Manual_W0QQitemZ8036646919QQcategoryZ18420QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Daverey

Title: removing the head on a 1978 B1800 4 cylinder
Post by: multirotor on March 10, 2006, 09:58:24 PM

Best way to remove the head is to put in a rotary.

Title: removing the head on a 1978 B1800 4 cylinder
Post by: oldone on March 10, 2006, 10:56:39 PM

Quote from: multirotorBest way to remove the head is to put in a rotary.

Priceless answer dude.............. :cool :Typing

Mazda Rotary Club

Cars by Model Type => Old school Mazda's => Topic started by: Mike D on February 08, 2006, 10:25:32 AM