11 Cab F8 - Change of Plans

[Bob Carriere]

Found my 3rd and last RH exhaust manifold and it is identical to the other two
I have and identical to yours as pictured on MLU....... why is the F8 so different........ I have a F15a rolling chassis and the exhaust outlet does clear the pedals...... is the frame of the F15 wider than the F8????

Good find on the regimental records........ how hard was it to find or search for the information......... such as 03851 for my C15a......? can a search be doen online???? or only by paper sifting onsite at the base???

Bob C

[Grant Bowker]

For what it's worth, "Ford Army parts Catalogue 1940-1942" SE39-42 reissued January 1942 lists all CMP Fords from F8 to F60H as using RH manifold 78-9430 and LH manifold 78-9431. No differences listed for weight of vehicle or number of driven wheels...

Here are links to a couple of previous MLU discussions of right hand Ford manifolds. http://www.mapleleafup.net/forums/showthread.php?t=23472 http://www.mapleleafup.net/forums/sh...ad.php?t=11790

A quick google on the part number came up with several that seem to be for sale.

[Yeo.NT]

Originally Posted by Bob Carriere

Found my 3rd and last RH exhaust manifold and it is identical to the other two
I have and identical to yours as pictured on MLU....... why is the F8 so different........ I have a F15a rolling chassis and the exhaust outlet does clear the pedals...... is the frame of the F15 wider than the F8????

Good find on the regimental records........ how hard was it to find or search for the information......... such as 03851 for my C15a......? can a search be doen online???? or only by paper sifting onsite at the base???

Bob C

The F8 is shorten 120” civilian truck chassis, so yes it different from the 15, 30 and 60 chassis.

The search for regimental diaries is fairly easy, if you have the correct unit to look up. 2 Medium Regiment from 1940-41 was later changed to 2nd Heavy Anti-Aircraft Regiment. This made it a little harder to find the original war diaries online at https://wartimes.ca/canadiana-heritage-war-diary-reels/

Just reading through the War Diaries and finding my truck mentioned is more of luck then anything, tho I am hoping get access to 27 Light Aid Detachment records I may find more information.

[Bob Carriere]

Did you use a civilian truck frame that your shortened or are ALL F8 shorten civilian frames????

Do you have a GOOD RH exhaust manifold the issue is that it will not fit due to your engine being a 50s issue???

Are you searching for "proof" that a special manifold did exist via MLU members with a F8 available for a photo.....?

David Moore had a F8 Ford and ran a V8...... since been sold but must be around Kingston somewhere and should be available for eyeballing...

Can you grind a section of your existing manifold and weld a flat with a plate to get by???

Bottom line F8 did have V8..... what did they use to circumvent the issue.....

Can play with the front engine mount to tilt the engine for a few mm of clearance.......

If you need a spare RH manifold I have a free one.......

Can you use a C8 frame..... I have a spare too......

Interesting dilemma!!!!

[Bob Carriere]

Did you use a civilian truck frame that your shortened or are ALL F8 shorten civilian frames????

Do you have a GOOD RH exhaust manifold the issue is that it will not fit due to your engine being a 50s issue???

Are you searching for "proof" that a special manifold did exist via MLU members with a F8 available for a photo.....?

David Moore had a F8 Ford and ran a V8...... since been sold but must be around Kingston somewhere and should be available for eyeballing...

Can you grind a section of your existing manifold and weld a flat with a plate to get by???

Bottom line F8 did have V8..... what did they use to circumvent the issue.....

Can play with the front engine mount to tilt the engine for a few mm of clearance.......

If you need a spare RH manifold I have a free one.......

Can you use a C8 frame..... I have a spare too......

Interesting dilemna!!!!

Found a pic. of a 32-36 V8 manifold...... it dumps out at the end........

[Mike K]

The F8 has a shortened/welded together chassis , this was done at the factory.

I have some manifolds somewhere. left over from when I had the MCP 11D truck.

On another topic, the F8 I was told of in Sydney years ago....is a C8. The owner, he was talking to me on the phone, he got mixed up and he told me he has a F8 when what he actually owns is a C8.

[david moore]

Bob,
The F8 that I had is still around in Ontario but the V8 in it is not the original. In fact I gave you the original engine (very seized) a few years back. I can't remember if either of the manifolds were still on it or if I used them in the rebuild. My recall is that the manifolds on later V8's were too wide to fit in the F8.

[david moore]

I found these photos of the V8 I got from Brian Asbury. It needed a lot of work but those are the manifolds that went into the restored truck, Clearly the left is different from the right. It was a cab 12 by the way.

[Bob Carriere]

Long time no speak...... nice to hear from you.

Yes still have the parts and available for the same price to MLU members.... you only had the RH side exhaust manifold which is clearly the larger size and stored in the barn with the spare head...... our cab 12 Ford would have had the wider frame.... the F8 frame was really anemic ....so was the C8 converted civilian frame.

As far as I know ..... we have never willingly scrapped any usable CMP parts.....some bad frames were disassembled and bad sections scrapped but everything else has been stored and awaiting someone in need...... even questionable rims deemed unsafe for the road have been marked with a "Y" fro yard use and retired t help move hulks around the property. Far easier to move the hulk close to the barn ....close to all the tools than hard wrenching in the field. People have been nice to me when I needed parts and I try to reciprocate.

Hope to see you in August.

[Yeo.NT]

With a little more digging the issue with F8 manifold clearance has already been brought up here previously in Jim Prices thread “Exhaust Manifold - Right Side - F8”
http://www.mapleleafup.net/forums/sh...ad.php?t=11790

I will theorize the original manifold “78-9430” which is mounted flat against the block had a heat soak, expansion and contraction issue. This caused cracking and would be replaced by what was readily available through post war years.
With the 15/30/60 having larger numbers and longer production run. Its purpose built chassis had more clearance the issue was never noticed, allowing the use of 21-9430 car manifold.

With the F8 being such a short run and based on the civilian chassis there have been a few other oddities I’ve come across. Including the steering, suspension and brakes. The exhaust clearance in some ways isn’t a surprise.