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Author Topic: has anybody used TRW pistons? specs needed badly...  (Read 2200 times)

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Offline paulages

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has anybody used TRW pistons? specs needed badly...
« on: May 10, 2007, 11:40:57 AM »
my machinist is finally back at my engine project, and needs clearance specs for my pistons. all of his TRW catalogs are for automobile pistons. anybody know what the clearances should be, or where to track them down?

here's what the boxes say:

"TRW L2424F 3.0MM

89 TRW HIGH PERFORMANCE"

these are 3mm overbore pistons intended for an SOHC cb750.


 ??? ??? ??? ??? ??? ???
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paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline mlinder

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #1 on: May 10, 2007, 12:11:17 PM »
I dunno paul, but hope you get that thing running soon. Can't wait to see it. Decided which bike it's going in yet?
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Offline paulages

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #2 on: May 10, 2007, 12:43:25 PM »
no, but since i haven't built up another 550 for it to fit in, i'm thinking it's going in the runner. i might temporarily use the 650 frame for testing, as it's removable frame rail will facilitate easy engine removal.
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paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline paulages

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #3 on: May 10, 2007, 02:14:59 PM »
he found the specs in the bottom of one of the boxes. thanks!
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paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline mlinder

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #4 on: May 10, 2007, 02:35:03 PM »
Quote from: paulages on May 10, 2007, 02:14:59 PM
he found the specs in the bottom of one of the boxes. thanks!

Yer uh, welcome. Glad I could help? lmfao.
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Offline Terry in Australia

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #5 on: May 11, 2007, 02:37:00 AM »
Vroom, Vroom, KABOOM! ;D
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Offline Big Jay

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #6 on: May 12, 2007, 12:34:57 AM »
I sold those back in the 70's. Didn't know there were any still around

Jay
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Offline paulages

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #7 on: May 12, 2007, 11:03:48 AM »
Quote from: Terry in Australia on May 11, 2007, 02:37:00 AM
Vroom, Vroom, KABOOM! ;D

...the sound of terry's tiny redneck brain thinking too hard... ;D
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paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline maksuttt

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #8 on: May 12, 2007, 11:50:27 AM »
Hey, paulages! Did you buy pistons as kit with rings or you bought rings separately?
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Offline paulages

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #9 on: May 12, 2007, 04:03:07 PM »
got the rings from hastings. cost more than the pistons, but the pistons were only $70 or something, so that's not necessarily so bad.
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paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline 68grandprix

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #10 on: May 18, 2007, 08:30:05 PM »
What was the part number for the rings? I have these same pistons, but need rings. Thanks, Jimmy.
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Offline paulages

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Re: has anybody used TRW pistons? specs needed badly...
« Reply #11 on: May 18, 2007, 11:19:05 PM »
not sure. i have them in my shop or at my machinists'. i'll try to find them for you before the packages get lost.
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paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R
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