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

Advice opinions please

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  #61 (permalink)  
Old 25-06-21, 01:41 PM
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A little more thought and I think I see where you are coming from. Sorry if I'm a bit slow. Yes, the exhaust gas going through the inlet manifold would warm up the original auto choke faster but I believe its main purpose is to warm up the whole inlet tract and this will have a similar effect regardless of carburettor type.
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  #62 (permalink)  
Old 26-06-21, 09:03 AM
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Whilst in limbo, have not been idle. With a lot of stuff out of the way gave engine bay and block a good clean and it came up quite well. Renewed all the bushes on front anti roll bar as they were tired and had a critical look at all the other bushes at the front end - which appear to be new or very recent. Fitted new shocks all round - GAZ adjustables - springs were new last year before I took possession. This was all stuff I'd identified and planned to do over the coming months/years and had already accumulated the bits.
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  #63 (permalink)  
Old 04-10-21, 09:24 AM
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Am back on the road - or I was briefly - but more of that later.
As per below have now been through front suspension in its entirety and then turned attention to the engine. Decided to renew anything suspect so new cam, followers, pushrods, water pump, timing chain and sprockets, valves, collets and had the heads done.
Inlet manifold looked decidedly mucky particularly under the metal plate on the underside so took the plate off and there was a big crack.
Had an extremely generous offer of a loan of a manifold from a contributor on here to get me rolling again - thanks again - but in the end SLJ were able to supply a second hand one at a reasonable cost. After a weekend of cleaning it to within an inch of its life it's now painted and on the car.
After "breaking in" cam, initial driving impressions are excellent - not a night and day improvement but engine even smoother and handling great - and that's before doing the geometry properly.
Only fly in the ointment was a petrol pong which I presumed would be something not done up properly in the engine bay. Not so - I had a boot full of petrol (again), culprit being the SU fuel pump. Have had enough and am going the Facet route - even if it means building a little sound proofed home for it in the boot.
It might be of use to some to know where I got the various bits and bobs from so here goes.
Timing chain and sprocket, full gasket set for poly engine, valve springs, harmonic balancer all came from Real Steel in Uxbridge.
Cam, lifters, valves and collets came from Falcon Global in the USA.
Pushrods from https://egge.com/
Bushes and other suspension bits from Classic Bristol Car Parts and SLJ (who also provided water pump).
Track rod ends - Amsteer.
Thanks again to those on here who have been in touch with advice and offers of practical help - much appreciated.
Andrew

Last edited by AndrewA; 04-10-21 at 09:34 AM.
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  #64 (permalink)  
Old 04-10-21, 11:28 AM
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Andrew,
We put a facet pump in the boot of my 411 and used bonded rubber bobbin mounts to isolate the mounting plate I made from the boot bulkhead, when we fitted one on my 603 I followed the advice of the late Martin Barns and put the pump and a pressure regulator in the front drivers side wing bay where it works fine , I did not use a pressure regulator on the bigger engine and had no problems.
Geoff.
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  #65 (permalink)  
Old 04-10-21, 11:54 AM
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Thanks Geoff - effective isolation seems to be the key!
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  #66 (permalink)  
Old 04-10-21, 02:09 PM
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Quote:
Originally Posted by Geoff Kingston View Post
Andrew,
We put a facet pump in the boot of my 411 ...
Which Facet pump did you use Geoff? (there are several available for cars with carburettors)

I've been using Carter fuel pumps - I say plural because the first one died after very little use - maybe that was part of the problem. I gather they don't like infrequent use and they are cooled by the fuel itself.

One good thing about the Carter pumps is that they are relatively quiet - you certainly can't hear my boot mounted pump when the engine is running. They also come with rubber isolating mounts.

I have an Edelbrock carb on my 411 and use a fuel pressure regulator set at 5.5 psi.

My pump is connected to the original fuel uptake pipe, but with hindsight I would look at mounting the pump underneath the car to guarantee an instant gravity feed of fuel.
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  #67 (permalink)  
Old 04-10-21, 10:43 PM
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I should get back from Canada to my car by the end of the month. I have a long to do list and the extremely noisy Mallory pump fitted in my boot is high on there!

David
1964 408 Mk1
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  #68 (permalink)  
Old 05-10-21, 08:35 PM
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Fitted the pump this evening - went for a Facet Silver top. I used the same location in the boot but spent a bit of time making sure that it was unable to vibrate against anything and used the bobbins provided as part of the kit. On a brief test run it seems to work fine and to my ears is quieter than the SU - I cannot hear it at all when the engine is running.
Andrew
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  #69 (permalink)  
Old 06-10-21, 01:27 AM
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Andrew,
would you mind posting a photo up your pump set up. Are you taking the petrol feed from the top of the tank?


Thanks,
Kevin
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  #70 (permalink)  
Old 06-10-21, 05:06 AM
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Yes I'm using the pickup from the top of the tank. The flexible pipe had all been renewed last year (from tank to pump and pump to hard pipe going forward) in an effort to ward off E10 issues and because the old one was pretty ropey anyway which made the pump swap easy - otherwise I would have done that at the same time.
The Facet pump also comes with the ability to change the pressure by unscrewing the bottom and using a different spring (like the SU dashpot spring!). The carb on mine (a 500 cfm Edelbrock) wants a maximum of 6.5 psi and the pump as it comes is 6 - 7 psi so I changed the spring to a 4-5 psi one.
Happy to post pictures - will have a read how to do it!


Andrew

Last edited by AndrewA; 06-10-21 at 05:11 AM.
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  #71 (permalink)  
Old 06-10-21, 06:12 AM
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Thanks Andrew,
I have actually created some new improved instructions on attaching images on forum posts, but I haven't got around to posting them yet!
I will do so asap.
Kevin
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  #72 (permalink)  
Old 22-11-21, 08:53 AM
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Brief update - using car daily until recently - and getting more impressed with it day by day! Handling is lovely and all is quiet within apart from what used to be slight whirring from the rear that is now becoming more audible.
With this in mind I dropped it off at Hardy Engineering with all my new bushes and they will go through everything.
Drive up there was swift and enjoyable and was pleased to be shown three other Bristol axles they'd just rebuilt - it appears the car is in good hands but time will tell!
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