FE-DOHC wikipedia page maintenance

[fredio54]

Hi,

Today I had a helpful member add me to his msn and proudly inform me that he "fixed" the camshaft info on the wiki page. In fact, he broke it :-) I fixed it a few minutes ago.

Myself, Nick (carcenomy), Karri (STW), and possibly/probably others have put a bit of effort into that page to ensure it is right. In fact, when I put it up at first, it was removed by someone that didn't think it was warranted. Nick put it back and it lasted till now.

If you see something wrong with it, please post in this thread to ensure it is fixed in a timely and accurate manner.

wiki page : Mazda FE-DOHC engine - Wikipedia, the free encyclopedia

Fred.

[egonn]

Haha.. sorry for that! my bad!

[fredio54]

No worries, you meant well :-)

[chief tool]

Hey Fred,

Maybe you could help clean up this mess with your account :

List of Mazda engines - Wikipedia, the free encyclopedia

I've never gotten around to setting up an account to fix this but:
The FS is not related to the other "F" series engines but is a stroked BP, so therefore relates to the "B" engines

The MA is not related to the "F" series either, but is a derivative of the 1500/1800/NA/VC/MA series.

Which brings me to point 2:
the VC and 1800 are not related to the xC engines at all..Plus I dont know what the 1600 (1590cc) is in the xC series.

The 1500 came out in the 1960s and was a 78x78 square engine it was found in the mazda 1500 and 1500SS with twin carbs. That engine was stroked to become the 1800. in the mazda 1800 with a side draught SU style carb.
This block was then re worked slightly to become the NA for the capella/818, bore stroke 78x83. (this is probably the 1600 they speak of at 1590cc)
It was this engine that was bored and stroked to 80x88 to make the VC found in the 121L/929 of the 1970's
This engine was then stroked again to make the MA 80x98 which was found in the 626 GA and GB series.

Who ever wrote this originally looks like they were guessing alot of the details.
Thankfully I have owned enough NA/VC/MA engines to know theyre all related, A neighbour owned a rare 1500SS...I managed to buy a set of those carbs to stick on my NA in my then 808 1600 (818 in other countries), before the MA went in.

Its too bad that the 1500 was a good engine but was never designed for the overbore that the factory gave it, at 80mm in the VC and MA there was barely 6mm between 1&2 and 3&4 and about 10mm between 2&3.
Head gaskets used to burn alot.
By the time the MA came around with its massive 98mm stroke, you could tell mazda were getting desperate looking for capacity...the block grew about 32mm higher to accomodate that 10mm stroke increase...not ideal
It was a very tall engine...and heavy plus the bore stroke ratio meant it really struggled to rev (worse than the F2)

Rant over..for now...

its too bad that wikipedia is about 70% accurate.

[fredio54]

Hey Chief :-)

1. You don't need an account, just do it.
2. Disagree about the FS series. I've seen the bell pattern, and as fraud says, it appears to be the same as F but with two bolts less or some trivial detail.
3. Fair enough :-)
4. Can't say I give a toss about any engine that doesn't have a bucket style head :-)

Fred.

[chief tool]

1. You don't need an account, just do it. Really? In which case i will...its a bit of work though, i'll have to make sure that I can fully back up my info first.
2. Disagree about the FS series. I've seen the bell pattern, and as fraud says, it appears to be the same as F but with two bolts less or some trivial detail. Are you sure? I havent pulled one apart myself and measured the bits, but it does have alot in common with the B series...Such as water pump style and location, crank pin and main journal diameters on the crank. to me the 83mm bore is a dead giveaway, same as the BP. all F series engines except the F6 use an 86mm bore. The F6 used an 81mm bore but on the same cylinder spacing as the others.
   
3. Fair enough :-)
4. Can't say I give a toss about any engine that doesn't have a bucket style head :-) Either do I now....but back then.....

Cool, comments in italics

[fredio54]

Yes really, but your IP will be exposed if you don't use an account. Not that that matters really... but...

Such as water pump style and location

This is the same across ALL mazda engines I've ever touched. Cam belt driven centrifugal fans.

I'm not "sure" but I do believe I am right, yes. Could be wrong, but status quo is the way to go on that for now if you ask me.

Fred.

[chief tool]

Originally Posted by fredio54

Yes really, but your IP will be exposed if you don't use an account. Not that that matters really... but...

Good point, I'll wait until my info is rock solid. Then i'll get an account

Originally Posted by fredio54

This is the same across ALL mazda engines I've ever touched. Cam belt driven centrifugal fans.

You mean impellers...the B series all had water pumps driven off the accessory belt..the FS is like this also. Only the geniune F series used the cam belt drive.

[fredio54]

Either you are wrong or I'm losing my mind/memory. I swear I swapped the water pump and cam belt on my sisters sohc 16v b5 in her 323. I swear it was tooth driven like the F is. It could be that I am losing my mind though?

[jesiotrot]

Nope, chief tool is right -



Wont bother posting pic but its pretty much the same thing for BP DOHC engines too.

Must be losing your mind

[egonn]

My miata 1.6 bp -engine has the same setup as the fe3, with timingbelt driving both oil-pump and water-pump .. accessory-belts driving one regulator on one side and the powersteering on the other..

[fredio54]

I just checked the B6T manual and that is not driven by the cam belt either. Hmmm.

[jesiotrot]

I just starting downloading the entire BF chassis/B6T service manual from the fordlaser site to double check. Guess i dont have to now

[fredio54]

I'm still certain that the b5 sohc 16v one (jap import i think) that i did was driven from it. It might be hard to prove whether I'm wrong or right though... It's possible that both styles were used.

[chief tool]

I am replacing the waterpump on a BG with a B6 SOHC at the moment..and its def driven off the accessory drive.

I have had SOHC B3 and B5 engs and they were the same.

an ex G/f owned a KJ laser (same as BH 323) with a BP DOHC and it had w/p driven off the accessory drive.

I've got the shop manuals for the BG and BH, as well as the '88 121 with the B3.
I'd stake my life on them.

The only thing thats a bit vague on is the FS....but next time I am at my mate's wrecking yard, i'll take some photos, I am confident its the same also.
I cant find the photos of the FS-ZE that I had, but thats how you could tell it from a FE3..water pump drive.