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Stickman
Joined: Fri Apr 10, 2009 11:29 pm
Posts: 1524
Location: Kallangur, Brisbane QLD
Car(s): 3x1965 PR20(Donkey, Jenny n Bundy) 1 1969 PR20(Percy) 2 1968 PR20(Eugine n GT Donor) 1 1968 PR91 GT, 1 1965 Wasp
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Just wondering if there is any difference in the std cam shafts between the 3 bearing motor and the 5 bearing??
And is the cam in the 1500 the same as the GT 1600??
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| Sun May 31, 2015 11:14 am |
  
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CQGT
Joined: Sun Dec 12, 2010 10:04 am
Posts: 385
Location: Boyne Island.Gladstone. Queenland
Car(s): '70 PR91,'69 PR20 x 2,'66 PR20,'65? KR20's x 2,'66 ? PR90,2012 d22 STR Navarra.
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Hi Sticky.
This is 1 of the mods Isuzu had done when they went from 3 brg. mains to 5 brg.
They changed the profile of the cam lobe to get better economy and from 6 brg. to 5.
Isuzu brought out a supplement to the engine manual explaining the difference.
The cams on all the engines are different. ie. 3 & 5 and cc rating. My parts books give me 4
different part numbers.
Dave.
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CQGT.
I'm the Dave with the convertible.
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| Sun May 31, 2015 1:03 pm |
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Asroc66
Joined: Tue Jun 18, 2013 5:09 am
Posts: 428
Location: Sydney NSW
Car(s): PR91 1967 GT, PR20 1966 1/2 with GT Goodies
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Hi Stickman,
Like the Crankshafts, the Cams are not interchangeable between early model 3 bearing and later 5 bearing engines.
Different number of Cam bearings between the 2 camshafts.
Later 5 bearing 1500 and 1600GT OK however
Cheers
J
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| Sun May 31, 2015 10:01 pm |
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PR91
Joined: Tue Sep 16, 2008 11:54 am
Posts: 2542
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3 bearing GT and sedan had the same cam.
5 bearing GT had the same profile as the 3 bearing.
5 bearing sedan was a tamer profile for economy.
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| Mon Jun 01, 2015 8:09 am |
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Stickman
Joined: Fri Apr 10, 2009 11:29 pm
Posts: 1524
Location: Kallangur, Brisbane QLD
Car(s): 3x1965 PR20(Donkey, Jenny n Bundy) 1 1969 PR20(Percy) 2 1968 PR20(Eugine n GT Donor) 1 1968 PR91 GT, 1 1965 Wasp
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Thanks guys
I have a NOS cam I bought a couple of years ago, now I just need to figure out what engine it's for......
I'll get the part number off the box and see if someone can isolate which one for me
_________________
1xB+1xE+2xL+1xE+2xT=BELLETT
RUST isn't a crime
www.gartdesign.com.au
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| Mon Jun 01, 2015 9:22 am |
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Stickman
Joined: Fri Apr 10, 2009 11:29 pm
Posts: 1524
Location: Kallangur, Brisbane QLD
Car(s): 3x1965 PR20(Donkey, Jenny n Bundy) 1 1969 PR20(Percy) 2 1968 PR20(Eugine n GT Donor) 1 1968 PR91 GT, 1 1965 Wasp
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I have a 64/65 parts book and it has 2 numbers for cams 12511 224 (G150) & 12511 223 (G130) Part number for my cam is 12511 333 Can anyone tell me which engine it's for? (please be GT please be GT please be GT  )
_________________
1xB+1xE+2xL+1xE+2xT=BELLETT
RUST isn't a crime
www.gartdesign.com.au
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| Mon Jun 01, 2015 7:56 pm |
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Dick
Joined: Sun Mar 01, 2009 7:18 pm
Posts: 95
Location: Netherlands / Holland
Car(s): Isuzu Bellett 1600 Sport SOHC, Honda City 2006, Honda CRV 2010, Vespa P150
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Sorry to mention it is a 1300 and 1500 cam ( 1968 - 1975). The GT cam is numbered 12510-058. This cam has a little plug at the gearbox side in it ....
Gr Dick
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| Mon Jun 01, 2015 8:37 pm |
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PR91
Joined: Tue Sep 16, 2008 11:54 am
Posts: 2542
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Yep. 5 bearing sedan cam.
Least "GT" of the lot.
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| Tue Jun 02, 2015 2:17 am |
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Stickman
Joined: Fri Apr 10, 2009 11:29 pm
Posts: 1524
Location: Kallangur, Brisbane QLD
Car(s): 3x1965 PR20(Donkey, Jenny n Bundy) 1 1969 PR20(Percy) 2 1968 PR20(Eugine n GT Donor) 1 1968 PR91 GT, 1 1965 Wasp
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Thanks Dick and Brett
Well I guess that rules it out for my GT engine then.......
_________________
1xB+1xE+2xL+1xE+2xT=BELLETT
RUST isn't a crime
www.gartdesign.com.au
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| Tue Jun 02, 2015 8:55 am |
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Asroc66
Joined: Tue Jun 18, 2013 5:09 am
Posts: 428
Location: Sydney NSW
Car(s): PR91 1967 GT, PR20 1966 1/2 with GT Goodies
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Tighe Cams for a re-grind
Tell him the Bellett nut from Tassie sent you
He's reground 3 for me so far.......
You won't look back
Cheers
j
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To increase the fun, add a hair dryer
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| Tue Jun 02, 2015 8:58 am |
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