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Kirkham Motorsports

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  #381 (permalink)  
Old 09-09-2021, 04:01 AM
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Welcome back mate, there mustn't be much left to do once your motor returns.
What are your plans for the motor rebuild as I don't think you can change much prior to registration.

Richard
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  #382 (permalink)  
Old 09-10-2021, 01:05 AM
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Richard, I haven't done any wiring yet; that would be the major task ahead.
The engine has to be standard for registration purposes; as you know, that gains an easy tick from Regency Park.
The power-to-weight ratio will be roughly equal to a GLA45; I'm 'mature' enough to not need any further ....'enhancements'.

Cheers!
Glen
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  #383 (permalink)  
Old 09-10-2021, 11:02 AM
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Hi Glen,

Looks like steady progress on your build. Getting the motor all sorted before it goes into the car is a wise move.

Was the 302 originally mated to a manual transmission or an automatic transmission?

While the motor is in the shop, a few suggestions to consider especially if the motor was originally mated to an automatic transmission:

- Review with your engine man the whole flywheel / clutch, release bearing and starter motor setup that you plan to use.

- Discuss what type of crankshaft pilot (spigot) bearing or bushing to use with your Toploader. It will be much easier for him to change it in his shop, rather than you doing it in your garage, should it need to be changed. Sometimes they are easy, other times not so much.

- May also want look at the crankshaft end play, no doubt there is a spec for that. I am not an engine expert, but I would assume motors are built to accept either type of transmission and that crankshaft end play is the same or similar for both. Would not hurt to ask.

- As I recall you plan to run a hydraulic throwout (release) bearing, instead of an external slave cylinder setup, due to space constraints. You want to be sure your setup is correct to avoid having to take things out in case of an interference or a leak.

Keep up the great work, you are getting closer and closer to the completing the build and then driving & enjoying your stunning Cobra!


- Tim
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  #384 (permalink)  
Old 09-10-2021, 06:48 PM
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Hi Tim,

Valuable comments, thanks.

The engine was originally mated to an automatic transmission in an AU II Ford Fairlane. FYI, the Fairlane was sold here in Australia until around 2007, unlike your American Fairlane.

I visited the workshop yesterday, and work has started on the engine. Iíll be in there again on Monday, and we will be talking about the spigot bearing (thanks) and also the flywheel / clutch / HTOB specs as well as the starter motor and steel bellhousing.

Yes, Iím aware of the critical nature of the alignment of the engine / bellhousing / gearbox, even more important when using an HTOB. Removing the gearbox to address a HTOB problem further down the track is something I want to avoid! I wish I could use a conventional hydraulic clutch actuation; Iím told I wonít have room for that, so proceeding along the HTOB route.
I will also ask about the crank end play.

It does feel like daylight at the end of a long tunnel is getting closer.

Comments and advice always appreciated!

Cheers,
Glen
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  #385 (permalink)  
Old 09-10-2021, 09:34 PM
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Hi Glen,

Are you rebuilding this engine as complete refresh, new pistons, rings, new camshaft etc?

Gary
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  #386 (permalink)  
Old 09-11-2021, 07:03 PM
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Hi Gary,
I know the history of the engine, and Iím not expecting surprises when itís stripped down. That said, I know and trust these guys, and will follow their advice as to what they determine is required. The engine must be unmodified at the carís inspection for road registration.

Cheers!
Glen
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  #387 (permalink)  
Old 09-12-2021, 10:34 PM
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Absolutely agree with standard engine power Glen, there is an awful lot of blood, sweat & tears, not to mention time and money also invested into these cars. Mine will definitely just be a cruiser.

Cheers
Richard
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  #388 (permalink)  
Old 09-13-2021, 03:29 AM
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Quote:
Originally Posted by xb-60 View Post
Hi Gary,
I know the history of the engine, and Iím not expecting surprises when itís stripped down. That said, I know and trust these guys, and will follow their advice as to what they determine is required. The engine must be unmodified at the carís inspection for road registration.

Cheers!
Glen
Ok Glen, sounds good. Even a refreshed 5.0 EFI engine will be quick enough.

Are you staying EFI, or will it be Webers, or a Holley?

Gary
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  #389 (permalink)  
Old 09-13-2021, 05:32 PM
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Hi Gary,

Our compliance is a little different to yours in Queensland. If I change anything from ďstandardĒ on the engine, the car will need to be subjected to an IM240 emissions testÖ and that I do want to avoid. Any changes I make need to be legal; the car is worth too much to risk any insurance issues.

So, what to do? Our club started looking at obtaining the same freedoms that the street rod guys have, particularly for emissions (ie virtually no boundaries), but they also have so many other freedoms. We are not far down that (long, long) track yet, but Iím hoping we can get there some time in the future.

Back to your question, ideally I would like the downdraft Webers as that is what the 289 Comp and FIA cars (and also COB6008, my ďinspirationĒ car) used. The JWA GT40s at LM in í68 and í69 used a similar setup, but on a 302. My Alfa has twin side draft Webers, so I have a connection there as well. Back closer to the real world, a nicely set up Holley would probably be a better compromise, but doesnít look quite as good.

There you goÖ thatís a long response without actually answering your question

Cheers!
Glen
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  #390 (permalink)  
Old 09-13-2021, 05:50 PM
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Glen,

The Webers do add the WOW! response from people. Can't count the number of people who stopped by to look at the FIA at the US Vintage Grand Prix and were in awe of the Webers. While I absolutely love them on the race car, I am not sure how well the IDA's would do on the street. They are not really happy under 4,000 rpms and they really love 5,000 rpms and above. If you were to use downdrafts the IDF's might be a better option for the sweet.

A Holley would work just as well too. What ever route you go will be the right one for you. Unless it is parked with the bonnet up, nobody knows what's underneath the bonnet anyways.

Good luck.

Cheers,

Jim
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  #391 (permalink)  
Old 09-14-2021, 01:35 AM
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Hi Glen,

So if your donor engine is already EFI, the EFI needs to stay to be emission compliant.

I don't believe you can change back to carburettors, or change the camshaft profile, or compression ratio.

Gary
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Last edited by Gaz64; 09-14-2021 at 01:53 AM..
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  #392 (permalink)  
Old 09-14-2021, 04:24 AM
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Correct, Gary. I think a "kerbside" noise test and a CO2 test are all the testing that is required if the engine is to standard/unmodified spec.
Can legally change the engine spec. (carbs/cam/heads) afterwards but would need to undergo the full IM240 test routine....hence the interest in piggybacking on the street rods freedoms. A lot of work to be done to achieve that though!

Cheers,
Glen
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  #393 (permalink)  
Old 09-14-2021, 04:30 AM
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Glen,

The Webers do add the WOW! response from people. Can't count the number of people who stopped by to look at the FIA at the US Vintage Grand Prix and were in awe of the Webers. While I absolutely love them on the race car, I am not sure how well the IDA's would do on the street. They are not really happy under 4,000 rpms and they really love 5,000 rpms and above. If you were to use downdrafts the IDF's might be a better option for the sweet.

A Holley would work just as well too. What ever route you go will be the right one for you. Unless it is parked with the bonnet up, nobody knows what's underneath the bonnet anyways.

Good luck.

Cheers,

Jim
Jim, agreed ....Webers do add the WOW factor. If that does eventuate one day in the future, I agree - the IDFs would be more suitable. My high diff. ratio results in my gearing setup equating to a five speed gearbox with no first gear (2.92 diff and w/r Toploader)

Cheers!
Glen
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Old 09-16-2021, 03:42 AM
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OK, so Webers are on the "wish list", some time down the track. Got to get this car finished first, huh?

Nice Spring day here, so spent the afternoon out in the Cobra's garage with the door open ..... letting the sun shine in. Job in hand was mounting the battery in a "safe haven".
Took a bit of deliberation/procrastination but in the end, the seemingly obvious solution finally presented itself.

Turned out OK. Waiting on a thumb screw to secure the door, but otherwise, job done

Cheers!
Glen

Here are the pictures ....
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  #395 (permalink)  
Old 09-16-2021, 03:59 AM
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Glen,

Nice work! Also, smartly placed on the passenger side to help offset the weight of the driver and improve balance.

Jim
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  #396 (permalink)  
Old 09-19-2021, 10:46 PM
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The panel for the right hand side was easier/quicker to shape and install...
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