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8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc

Poly 318

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  #1 (permalink)  
Old 10-10-16, 05:09 AM
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Well none of those numbers tie in with mine. In addition on this Forum there is a picture of a broken manifold with the numbers 2206275 clearly marked and again different from your numbers.
My exhaust lasted the car's life until an unfortunate truck driver broke them when unloading the car. The pipes under the car are in alignment with the manifold so I have no reason to question their correctness. In any case even if the LH was not correct it still proves there are many casting numbers.
Other manifolds of Chrysler engines of the period will not clear the frame.
Have tried to attach a picture but no luck.
As already mentioned there are 3 or more manifolds for the 318 depending on car/truck model so the ULTIMATE AMERICAN....book is in error with only one casting number, given I have just shown you 3 ! Perhaps they got their info from Sethright LOL So 3 numbers of mine + one from ULTIMATE AMERICAN makes 4.. But wait..on E Bay http://www.ebay.com/itm/1962-63-64-6.../201676760124?
there is one for sale now today with number 2288186 clearly listed for a poly LH side, so there are at least 5. Proves my point that the casting numbers are meaningless. What would have meaning is what car was our engine sourced from or what LH exhaust did they use?
Anne

Last edited by Anne; 10-10-16 at 05:39 AM.
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Old 10-10-16, 07:35 AM
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Quote:
Originally Posted by Anne View Post
As already mentioned there are 3 or more manifolds for the 318 depending on car/truck model so the ULTIMATE AMERICAN....book is in error with only one casting number, given I have just shown you 3 !
Your derision is misplaced (and uncalled for). Who said the ULTIMATE AMERICAN book lists only one casting number for this exhaust manifold? It lists others, I just didn't transcribe them all!

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What would have meaning is what car was our engine sourced from or what LH exhaust did they use?
Anne
Well let us know when you find out. LOL
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Old 10-10-16, 12:50 PM
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Ok..the clear impression was there was only one.
Given that now you tell me that the ULTIMATE book has more than one LH casting number how many are listed?
Are there any that match the ones I have provided? What I have shown, is that based on my limited knowledge, at this point there are 6 or more LH casting numbers...possibly more? This is why I find casting numbers a curiosity but not of much help in sourcing a manifold.

Anne
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Old 11-10-16, 02:06 AM
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I know that Spencer Lane Jones Ltd in Warminster has had (or is having) a batch of steel exhaust manifolds fabricated. These are not tubular but are equivalent to the cast originals, just fabricated in steel instead. One of these has been fitted without problem to my 410 since I caught the exhaust on a cattle grid and snapped a manifold earlier this year.
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Old 11-10-16, 02:37 PM
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Ok thanks for the tip. I am also having low profile mufflers made up under 3" to avoid /minimize the problem you encountered.
Anne
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Old 11-10-16, 10:18 PM
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Quote:
Originally Posted by Anne View Post
Ok..the clear impression was there was only one.
I said the book "lists 2268127 as being a left manifold used on Dodge cars "

Note I said "a manifold", not "the manifold" !

Quote:
Given that now you tell me that the ULTIMATE book has more than one LH casting number how many are listed?
I don't know, I don't have the book. I was accessing an online preview of the book. The information is grouped under car brands - e.g Chrysler, Dodge, Plymouth, DeSoto etc. The Dodge section listed several exhaust manifolds for the 318 Poly engine - 3 LH and 3 RH.

Unfortunately the page that I think we really need (page 200), which would list Plymouth exhaust manifolds, is not included in the online sample. I was tempted to buy the book to satisfy my curiosity but as my Bristol has a different engine I resisted the urge.

It is of course quite possible that Chrysler manufactured a specific manifold for Bristol and that we won't find the exact casting numbers anywhere other than the Bristol parts list.
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Old 12-10-16, 11:01 AM
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I wish I could be more help with this thread, but I cannot find the original manifolds of my 409, I think I have sold them already (my car has some fabricated parts).

I am absolutely sure that the manifolds were not made specially for Bristol, I have books about tuning Mopar engines which show identical manifolds on 318 'A' engines (not 'LA') from series models, but the tuning books don't talk about the models the engines were fitted to.

I can confirm that the correct manifolds for a 409 could be described as : Right hand manifold has a central outlet and includes a butterfly valve controlled by a bi-metallic spring (intended to restrict flow and direct the flow across the heating passage in the cylinder heads and inlet manifold to the other side of the engine, when cold). Left hand manifold has a rear outlet. Both manifolds are simple 'logs', i.e. there is no separation of the exhaust flows from the different cylinders.

I believe the engines were bought from Chrysler in only two batches, the first being 313 engines probably in 1961 or 1962, mostly used in 407 and 408 cars, and then a batch of 318 engines probably bought in about 1966, mostly used in 409 and 410 cars.

As the new 'LA' engine became available from about 1965 on, it is very difficult to pin down the models for the second batch of engines. I would advise contacting the very small number of companies offering specialist tuning of the 'A' Poly engine, and asking them to obtain the correct manifolds on your behalf.
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Old 12-10-16, 03:45 PM
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Thanks...I can confirm 100% that these manifolds were not built for Bristol as I have another engine ( wish I knew what car it came from) that has exactly the same manifold. It's the one I am using but managed to crack the flange were it meets the down pipe. Fixable, but I would like a good one.
I have e-mailed Spencer Lane Jones as well as the Chrysler Historical office.
I gave them the 5 casting numbers I have, to see if that will help to identify the source.
Also note that a 66 Dodge Charger uses a poly engine as their base engine.

Thor if you can scan the page where your tune up book shows "our" manifold that would be of some help.
Thanks to all,

Anne

PS just got a reply from Spencer Lane Jones 165 pounds in steel and here is a picture
Attached Images
File Type: jpg Exhaust manifolds V8.jpg (351.2 KB, 44 views)

Last edited by Anne; 12-10-16 at 03:53 PM.
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Old 13-10-16, 09:37 AM
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It would be interesting if they have any information on the numbers from the Bristol parts list.
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