Pistons

Tiny
BERSYL671
  • 1991 TOYOTA PICKUP
  • 4 CYL
  • 2WD
  • MANUAL

My 1001 toyota pickup piston & rings. What is the least dia. I can use and the biggest I can use. What is the standard size for the truck. Is it.020" or the.030".

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Sunday, June 5th, 2011 AT 1:08 AM

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Tiny
MHPAUTOS
  • EXPERT
  • 31,132 POSTS

Standard size is referred as STD and is usually stamped on the piston crown, repair over size is usually in.005" increments, never re bore more than required to obtain a new bore size, the bore will have to be measured with an internal micrometer to attain the correct repair size needed.

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Sunday, June 5th, 2011 AT 2:35 AM
Tiny
KHLOW2008
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  • 41,985 POSTS

The shop doing the job should be able to advise you on the corect oversize to use if reboring is required.

The limit for oversized pistons for most vehicles would be 0.040".

0.020 is the 2nd oversize available.

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Sunday, June 5th, 2011 AT 1:02 PM

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