Author Topic: Piston markings  (Read 2102 times)

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Offline craigclayton

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Piston markings
« on: September 04, 2016, 04:11:54 pm »
Have barrel off of rm 125 b, and wondering what the markings are on the piston, and what they mean

I45K7
55mm
432P2
CD.   

Please enlighten me
Cheers C
74 Bultaco 250, 77 RM125b

Offline SUZUKI311

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Re: Piston markings
« Reply #1 on: September 04, 2016, 05:14:23 pm »
To me it looks like Wiseco markings, 55mm bore size, (std is 54mm) 432p2 is from memory Wiseco second oversize, CD is the type of rings applicable.
1977 RM80B-UNDER CONSTRUCTION-(Still after 11 years !) 2017 KTM 350EXCF , 96 CBR600, . Member of Bendigo Motorcycle club since 1981, Viper No. 311 (old VMBA Number!!)

Offline LWC82PE

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Re: Piston markings
« Reply #2 on: September 04, 2016, 05:15:28 pm »
Its a Wiseco, although 432P2 is 54.5mm. 55mm would be 432P4.
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline Suzukal

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Re: Piston markings
« Reply #3 on: September 04, 2016, 05:46:28 pm »
P2 - 54.50mm
P3 - 54.75mm
P4 - 55.00mm
P6 - 55.50mm
P8 - 56.00mm

Offline craigclayton

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Re: Piston markings
« Reply #4 on: September 04, 2016, 07:10:44 pm »
Now have magnifying glass out and it is marked
I45K7
50 mm
432P2
CD
Sorry for the error, both piston and bore look good so ????????
74 Bultaco 250, 77 RM125b