I posted a question about a Hilborn manifold on this thread but has not produced any responses so have posted a dedicated thread in the hope that some Hilborn experts out there might be able to answer the questions posed. Scroll down to post #72 and go from there. http://www.jalopyjournal.com/forum/showthread.php?t=355232&page=4
Good thought . I haven't done that yet. If no one can answer it here then that will be the next step.
Hillborn still produces their products and has an excellent Tech section too. They are very customer oriented. Normbc9
I think that injector may be for some sort of Weslake conversion head. They made them for several popular V8s back in the Can-Am days. It looks like the head flange is designed to be pretty much horizontal, as the barrel valve is "parallel" to the manifold. The daimler has angled head flanges like most V8s. Here's a pic of a set of SBF Weslake heads to show what I'm getting at...
I'd bet by the runner design that it's off of something with 4 valves per cylinder and siamese runners. Probably also dual overhead cam. <!-- / message -->
Weasel checking in here. I doubt it's a Weslake as all the Weslake V8 engines and derivatives I have owned ( ZL1 BBC, De Tomaso Can Am, Weslake Chevy 32V and Gurney Weslake) have had slide Lucas timed injection and round intake ports. The bolt pattern on the slide injection has been close to Weber IDA but has required the use of Weslake made adapters on my Gurney Weslake to take Weber IDA style throttle bodies. My immediate reaction was that due to the port shape was that this might have been for a DOHC Ford cammer. Daimler hemis have round ports so I too doubt it's for a Daimler despite the Hilborn paperwork. Russ Carpenter in the U.K. might be able to shed further light on it. I have this one photo of a Hiborn on a Daimler and I have blown it up - it appears to bolt right to the head without any adapter and the ports definitely appear to be round.... Daimler Ford 255 DOHC
Here's the cylinder head side of the Hilborn unit under discussion - thus my initial 255 DOHC guess, but the bolt pattern does not match up so we're still stabbing in the dark....
Here's a photo of the Gurney Weslake showing very clearly the round ports - this is where I had to use Weslake Weber 48 IDA adapters for the throttle bodies....
Another thing to bear in mind is the Daimler 2.5 hemi's size or lack thereof. The photo I took below shows comparison of an SBC intake and the daimler intake below it. The Daimler at 23 5/8" overall length (waterpump snout to back of block) is no bigger than a V8 60....
Definitely not Indy Ford, as the intake ports are way too far apart for the linkage shown... Weasel, you think there's a chance it might be off of some Cosworth V8 Indy variant? The oval ports and O-rings say it may not be as old as it looks. The bypass port in the barrel valve is typically used for crisper shutdown, so I'm thinking it's for oval track racing. All the F1 Cosworth stuff I've seen used the Lucas slides as well, which got me thinking maybe it was for an Indy setup... Great mystery!
And the top side of the throttle bodies looks like it may have been for a turbocharged engine with the 4 bolts and O ring seals.
Thought about that but the bolt spacing is a little off and I think they were EFI. I've checked every V8 I can think of from every part of the world and am stumped, U.S. factory, aftermarket and prototypes, European, Japanese, etc. from the 50s to today. I figure some sort of exotic 3 or 4 valve DOHC? V8, possibly 60s or 70s Can-Am?
Maybe a 1960s non American engine - a Repco Brabham or something like that? If it were 1990s or later it would be EFI which kinda kills the olds Aurora and Infiniti theory. Don't think its anything Cosworth - certainly nothing like the slide injection I had on my Cosworth GAAs and not like the DFV/DFX either. I thought about oddball stuff such as the Batten V8 - Rodger Ward had one sitting in his office so I was able to inspect it up close and personal so to speak, but it's not that either....
Not a Repco Brabham. They used Lucas slide valve injection. Picture below is of an Elfin 400 sports race car taken at a local historic meeting here in Oz.
Almost hate to stick my neck out like this but... NOVI? I'd bet some of the early Cosworths used at Indy had Hilborns...being as how the U.S. teams had so much experience with those setups. But the port shape and angle still doesn't seem exactly right. (Found a Cosworth with Hilborn injection, but I can't tell if it's the one in question...)
Why not stick your neck out - giraffes do it all the time. I seem to recall that DFV/DFX Cosworths had round intake ports. I have asked the seller of this setup to let me have the overall length of the unit - still waiting for a reply. Repco used both timed Lucas slide and*****erfly injection on various incarnations of their engines - but I am sure there are people out there in Downunderland with more specific information....
Found this picture of a NOVI - looks like siamesed Weber DCNF typ carbs on it a la Maserati V8, which would kill that theory....
I've seen pictures of DFX engines that definitely had oval intake ports, but all the ones I've seen had four bolts at the "corners" of the ports.
Ummmm really dumb thought, call me stupid for mentioning this but i swear that bolt pattern is sideways stromberg 97 or holley 94..... Now if that's the case we could****ume that somebody designed it to either fit to those flanges, gaskets or intake. Like i said dumb, but then again you'd be suprised how the evolution of quickchange rearends is and how most of the modern dimentions and bearings are based off a 1938 timken design.....
It is interesting that the Ebay listing for that manifold has Hilborn Paperwork with it that says it is for a Daimler 158" V8 - March of 1974
That's kinda where we started, Don; but no one has been able to find a pic of a Daimler head with the correct port shape, angle, or bolt pattern... I know they ran them in midgets here in the states, which would explain the Hilborn injection instead of Lucas PI. I did find it interesting that most all the pictures that came up on Google images were from right here on the HAMB. Love this site!
You know the numbers on the manifold don't seem to 100% jive with those on the paperwork. If it were me I'd be calling Don Enriquez at Hilborn!
Definitely not Daimler - I have a 2 1/2 litre and 4 1/2 litre Daimler hemi and both have round intake ports. My request yesterday to the seller for an overall length measurement on the base plate has so far netted zero response. That would discount it as Daimler in a heartbeat. I am pretty certain Hilborn mistyped the original order number and I'm with hotroddon - one call to Don Enriquez should clear this up. I just wonder how many of the bidders actually think it is for a Daimler and are going to end up with a wallhanger? I am still leaning towards a racing DOHC V8 of some kind....
That or the original owner had more than one Hilborn and the paperwork got mixed up. It does appear to be an estate sale, so who knows!
Yep. If you super-size the auction photos, there is one of the casting number that looks like 158-D-8 but the paperwork photo shows part number 152-DA-8. Assuming the serial number is correct, you need to contact Hilborn and ask for info on 158-D-8 #104
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