Print Page - Question about engine rebuild Stretch bolts

Title: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 14, 2017, 22:45

I know I need knew head bolts.

But do I need new bolts for underneath the engine that bolt the crank together ?

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 15, 2017, 08:13

Anyone

Title: Re: Question about engine rebuild Stretch bolts
Post by: jonbill on June 15, 2017, 08:16

I reused my main and rod bolts. Their diameter was still > the minimum. Can't tell you what that diameter is tho s:) :) s:)

Title: Re: Question about engine rebuild Stretch bolts
Post by: Carolyn on June 15, 2017, 08:53

rod bolts: 6.4 mm (0.252 in.)
main bolts: 7.3 mm (0.287 in.)

Title: Re: Question about engine rebuild Stretch bolts
Post by: jonbill on June 15, 2017, 09:03

Quote from: "Carolyn"rod bolts: 6.4 mm (0.252 in.)
main bolts: 7.3 mm (0.287 in.)

:thumbs:

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 15, 2017, 17:59

Ahh thankyou

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 16, 2017, 07:36

So if it measures less than 6.4 ok or if it measures more than 6.4 ok ?

Mine seem to measure 6

Title: Re: Question about engine rebuild Stretch bolts
Post by: jonbill on June 16, 2017, 08:00

It should be 6.4 or more. Are you using calipers to measure it? If so I think you need new bolts.

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 16, 2017, 08:04

Yes but crap calipers going to get some better ones today.

I seem to be finding them hard to buy new!

What should o search for

Title: Re: Question about engine rebuild Stretch bolts
Post by: Carolyn on June 16, 2017, 08:31

Thousands of them on Ebay. 6 mm is not quite believable.

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 16, 2017, 08:50

I'm talking about bolts for crank not for head Carolyn.

What are they called I'm assuming crank bolts ?

Title: Re: Question about engine rebuild Stretch bolts
Post by: Carolyn on June 16, 2017, 08:55

I meant vernier calipers.

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 16, 2017, 08:59

Lol ahh

Title: Re: Question about engine rebuild Stretch bolts
Post by: Call the midlife! on June 16, 2017, 17:34

I've got some verniers mate, if you haven't already replaced yours.

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Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 17, 2017, 10:12

It's sorted mate bottom end back together.

Head next !

Title: Re: Question about engine rebuild Stretch bolts
Post by: Carolyn on June 17, 2017, 10:15

You're cracking on! The bloody head is more work than the whole of the rest of the engine. no doubt you will march through!

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 17, 2017, 10:21

So much to do Carolyn so little time.

Christ I hope it works I've sunk some money in last week !

Title: Re: Question about engine rebuild Stretch bolts
Post by: ilovejapcrap on June 17, 2017, 10:22

P.s having a best mate who is a mechanic helps ALOT I feel like I've got a years knowledge on a week !

Title: Re: Question about engine rebuild Stretch bolts
Post by: Carolyn on June 17, 2017, 10:34

It'll work. No prizes for 'quick', though. Double check as you go. Engines want to run.

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