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Group N Bellett update 
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Joined: Tue Sep 29, 2009 10:15 am
Posts: 280
Location: Hobart
Car(s): 1970 Bellett, 1968 Bellett, Triumph Stag, 1940 Traction Avant, T Ford 1938 Pontiac plus the usual modern stuff
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Hi Belletters
I've been promising to put up some photos for a while so here goes.
I hope they end up in order. I had the choice of two different sets of rod - one set being the earlier ones which are slightly lighter (82 g each) and therefore attractive but you will notice a setback in the first photo that occurred with these so I've opted for the heavier, stronger later model type. They have more meat around the big end bearing especially, and carry bigger bolts.
Attachment:
OOPS.jpg
OOPS.jpg [ 45.39 KiB | Viewed 10385 times ]


Piston-gudgeon -rod assemblies are all weighted to 1 g. Two at 1137g and two at 1136g. Piston weights varied from 337 g to 345 g which required some "fettling". Other variables were in big end caps and 1 g variation in gudgeons.
Attachment:
weigh in.jpg
weigh in.jpg [ 45.61 KiB | Viewed 10385 times ]


New hi-tensile main cap bolts were check fitted by the chief financier, kero-cleaner, de-greaser, go-fer and part time casual would-be engineer.
Attachment:
Check fitting new main cap bolts.jpg
Check fitting new main cap bolts.jpg [ 48 KiB | Viewed 10385 times ]


Piston rings came complete with instructions - Perhaps one of our Japanese friends who visit the site can help?
Attachment:
piston rings complete with instructions.jpg
piston rings complete with instructions.jpg [ 44.11 KiB | Viewed 10385 times ]

End gaps checked out beautifully -13 thou for no 1 ring and 10 thou for number 2 without any filing required. The hi tech depth gauge for locating them squarely in the bores took ages to manufacture!!
Attachment:
Checking ring end gaps with hi tech depth gauge.jpg
Checking ring end gaps with hi tech depth gauge.jpg [ 39.4 KiB | Viewed 10385 times ]


The guys at Wade Cams are very helpful. This one’s profile is designed more for massive (?) torque from 35000 rpm upwards rather than for brute HP/speed. Of course they’re good – they originated in Tassie many years ago (but are not related!!).
Attachment:
Racing cam.jpg
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I’m thinking a red colour for the body will also help. Does anyone have any ideas or know some paint codes?

Stickman, if you know some nice red .............................Morris Marina colours, we could do them too!! :lol:
YP

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Bellett SEDANS are proof that the gods love us and want us to be happy.


Sun Dec 05, 2010 10:49 am
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Joined: Fri Nov 07, 2008 9:05 am
Posts: 620
Location: Western Victoria
Car(s): Bellett GT, Bellett Sedan, Prince Skyline GT, Porsche tractor, Lanz Bulldog, 996 Carrera 4,Prince Miler,
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Not only the cam grinder but but everything else in the motor would want to be good - at 35ooo rpm's . I think it may have been an Oops!
KB

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Sun Dec 05, 2010 9:57 pm
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Joined: Fri Mar 20, 2009 8:23 am
Posts: 1816
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what's wrong with 35000 rpm :?: . i would advise a scatter shield minimum of 10mm bissaloy prefered :shock:.


Sun Dec 05, 2010 10:03 pm
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Joined: Tue Jan 27, 2009 5:52 am
Posts: 205
Car(s): 66 GTPR90
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If 35000 rpm is entry revs LOOK OUT rotary's for top end hope it holds together Iwould nearly pay money to see a Bellett motor at 35000 rpm (from a long distance)
Good luck YP it looks like a sweet unit so far
cheers ken


Mon Dec 06, 2010 12:42 am
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Joined: Tue Sep 29, 2009 10:15 am
Posts: 280
Location: Hobart
Car(s): 1970 Bellett, 1968 Bellett, Triumph Stag, 1940 Traction Avant, T Ford 1938 Pontiac plus the usual modern stuff
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Yeeeaaaaggghhhh

She would either really go at 35000 rpm or not at all - probably the latter

OOOPS :oops:

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Bellett SEDANS are proof that the gods love us and want us to be happy.


Mon Dec 06, 2010 1:09 am
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Joined: Tue Jan 27, 2009 5:52 am
Posts: 205
Car(s): 66 GTPR90
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All forgiven still looks gr8
good luck keep pic's coming might see you & cars at Coona 2011.
cheers ken


Mon Dec 06, 2010 3:59 am
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Joined: Sun Feb 01, 2009 2:51 am
Posts: 1034
Car(s): 1964 GT Isuzu Bellett
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Yeah, looks like the high tensile chief in the cap !! 3500(0) and beyond is when a pointier cam comes to life, but there's not many places you can do that around here without attracting too much attention, or freaking oneself out a bit as well.

Go the "N". Patience makes perfections,

B.


Mon Dec 06, 2010 12:39 pm
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Joined: Tue Jan 27, 2009 5:52 am
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Car(s): 66 GTPR90
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Hey YP love the depth measure 3500(0) in a Bellett could nearly create a brown trouser moment.


Mon Dec 06, 2010 7:55 pm
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