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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Thu Feb 04, 2021 6:26 am Post subject: Re: My Big Bore '40hp' build |
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Its been a while since I posted! (Divorce and life rebuilding has been a set back)
I'll post some photos when I get chance; but I've got the engine in and all the plumbing and wiring completed. |
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Jun 29, 2021 5:37 am Post subject: Re: My Big Bore '40hp' build |
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I didn't use this CSP breather box in the end as it was too big to fit between the fan housing and firewall.
Original style 15' steel wheel 5.5, with 195x65 tyre |
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Oct 12, 2021 3:31 am Post subject: Re: My Big Bore '40hp' build |
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MOMO steering wheel fits nicely! |
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Lingwendil Samba Member
Joined: February 25, 2009 Posts: 3987 Location: Antioch, California, a block from the hood
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Oct 12, 2021 2:53 pm Post subject: Re: My Big Bore '40hp' build |
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The wheel is a MOMO copy I think. 350mm diameter with an MOMO boss adapter.
Seats are Cobra classic bucket.
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Rome Samba Member
Joined: June 02, 2004 Posts: 9602 Location: Pearl River, NY
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Posted: Tue Oct 12, 2021 3:29 pm Post subject: Re: My Big Bore '40hp' build |
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Have you been able to finish up the engine hookups/exhaust and finally take this beastie for a drive? |
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Oct 12, 2021 11:07 pm Post subject: Re: My Big Bore '40hp' build |
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Not yet. Front wheels and tyres need putting on, tracking needs sorting out front and rear and there is one wing and rear quarter panel to sand and paint.
Engine is all complete and ready to run |
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Thu Oct 21, 2021 4:50 am Post subject: Re: My Big Bore '40hp' build |
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Small update:
The passenger seat is non-tilting (long story!) so I have modified the subframe so it can tilt...
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Lingwendil Samba Member
Joined: February 25, 2009 Posts: 3987 Location: Antioch, California, a block from the hood
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Fri Oct 22, 2021 12:00 am Post subject: Re: My Big Bore '40hp' build |
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The hinges are stainless steel pin hinges. I cut them down and drilled out the holes to suit the M6 and M8 bolts I'm using.
I'm fitting rubber buffered between the two frame to take the weight off the hinges etc.
I'll post some more pics when complete. |
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Wed Oct 27, 2021 4:46 am Post subject: Re: My Big Bore '40hp' build |
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Passenger seat complete!
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Feb 01, 2022 6:00 am Post subject: Re: My Big Bore '40hp' build |
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5.5" steel wheel with 175x65 R15 tyres
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Wed Apr 20, 2022 4:51 am Post subject: Re: My Big Bore '40hp' build |
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Soon be on the road...
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W1K1 Samba Member
Joined: March 04, 2004 Posts: 4894 Location: Southern AB
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Mon May 30, 2022 5:15 am Post subject: Re: My Big Bore '40hp' build |
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First engine run:
Link
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QRP Samba Member
Joined: April 27, 2008 Posts: 1703 Location: NORTH HOLLYWOOD,CA
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Posted: Mon May 30, 2022 11:57 am Post subject: Re: My Big Bore '40hp' build |
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Bravo! |
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Lingwendil Samba Member
Joined: February 25, 2009 Posts: 3987 Location: Antioch, California, a block from the hood
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Mon Jun 13, 2022 5:15 am Post subject: Re: My Big Bore '40hp' build |
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Its on the road!! 🥳 Sounds awesome. I can't believe the twin 40 Dellortos work so well on this 1470cc setup (ok, so they have 28mm venturi's). The timing is a bit questionable at the moment. I thinks its set right at 7.5deg BTDC with the gun, but its using the original 1200 vac advance distributor. I need to do some more test runs...
It will need a heavy duty clutch pressure plate too, as it slips if I shift from 2nd to 3rd with a bit of a heavy right foot!
I will get a better video up some time.
I'm taking it easy on the throttle at the moment (3000rpm ish max), as it needs running in, but there is plenty there: I don't think it will have any problem doing 70...80...mph+
One strange thing that I did not know about was the VDO tacho was out quite a bit.: Luckily there is a small adjusting screw in the back, so it can be trimmed to the correct rpm, which I took a reference off the timing light.
Handling is night and day difference to what it was originally. I can throw it into a roundabout with very little body roll and positive feel in what its doing. I lowered the rear one outer spline and the front has sway-away adjusters. GAZ adjustable shocks all round; which I can experiment with the settings. |
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Lingwendil Samba Member
Joined: February 25, 2009 Posts: 3987 Location: Antioch, California, a block from the hood
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jasengine Samba Member
Joined: June 07, 2012 Posts: 95 Location: Wales
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Posted: Tue Jun 14, 2022 4:54 am Post subject: Re: My Big Bore '40hp' build |
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I like the idea of the adjustable vac advance; I could dial in exactly what the engine runs best on. |
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