MX-3.com

yiorta · Post by **yiorta** » May 19th, 2005, 2:10 am

Hi to everyone. Yesterday as i was inspecting my motor i found that from the right side is indicated B55. It is a 1996 model and i thought 16V DOHC - i bought it used. Also on the block is written MAZDA 16V DOHC. What is actually hapening, can anybody realize?

Post by **Custommx3** » May 19th, 2005, 9:41 am

you may have the 1.5L.

Take a pic of the motor and post it.

facko · Post by **facko** » May 19th, 2005, 8:11 pm

my car has the same stamp on it but im preetttyyy sure its still the 16v dohc

yiorta · Post by **yiorta** » May 20th, 2005, 2:07 am

I took pictures but i don't have a server to upload them. I could swear everything is 1600cc Dohc but the logo b55 is written on the side. Also the performance is much much better than the sohc 1600. It is dohc (you can see the diference). But i have never heard of an engine called B55. I know the jap B5 but not B55. Does anybody know anything about the B55???

yiorta · Post by **yiorta** » May 20th, 2005, 9:08 am

I also want a favor from those who have the 1600 Dohc to check their motors and tell me what is indicated!

Tonestire · Post by **Tonestire** » May 20th, 2005, 9:33 am

My engine also says b55 on the front right hand side. This is on a 1994 MX-3
manufactured 01-1994. I definiatly have the DOHC cam model and every auto parts store I've went to only listed the v6 or v4 1.8 or 1.6 never mentioned a 1.5.

freyguy_412 · Post by **freyguy_412** » May 20th, 2005, 5:03 pm

I have a 95 RS. It's definatly DOHC and it also has the B55 listed just under the valve cover, just above the heat shield on the driver side of the motor in the front. Will post a pic soon.

Joey's mx · Post by **Joey's mx** » May 20th, 2005, 5:33 pm

Yes it is marked b551-7 on the head but on the block it is marked b6s8

freyguy_412 · Post by **freyguy_412** » May 21st, 2005, 12:30 pm

Yoda · Post by **Yoda** » May 22nd, 2005, 12:23 pm

The B5-DE and the B6-DE are the same engine except for the stroke of the crank and con rod length. It is not unusual to see B5 casting on a B6. The B5 head casting did change for the '97-98 model years when the HP jumped up to 120-125hp on paper anyway (actual power seems to be much higher).

yiorta · Post by **yiorta** » May 23rd, 2005, 5:00 am

So our horsepower is 107Hp?

Post by **Custommx3** » May 23rd, 2005, 10:45 am

I believe is 105.

Yoda · Post by **Yoda** » May 23rd, 2005, 1:31 pm

Converting kW to HP the published euro-spec are slightly higher that the N.A. specs.

freyguy_412 · Post by **freyguy_412** » May 23rd, 2005, 1:42 pm

So is that head from 97-98 better? What vehicles came with it?