Honda-SOHC

Other Stuff => Misc / Open => Topic started by: McCabe-Thiele (Ted) on April 24, 2021, 03:01:19 PM

Title: What size / colour Plasigauge do I need.
Post by: McCabe-Thiele (Ted) on April 24, 2021, 03:01:19 PM

All this colour coding it's spreading everywhere it was bad enought working out what size shells I need  -not used Plasigauge in decades my memory was of it being white - so for a 400/4 crank what colour do I use on the mains please - Red Grey or Green?

Secondly will it be sufficient to just secure the main (10) crank case bolts above the crank to get a reliable reading?

Title: Re: What size / colour Plasigauge do I need.
Post by: AshimotoK0 on April 24, 2021, 03:04:51 PM

Definitely Green

Ask Bryan about the bolts but I just torque up the main bolts.

Title: Re: What size / colour Plasigauge do I need.
Post by: McCabe-Thiele (Ted) on April 24, 2021, 03:11:58 PM

Quote from: AshimotoK0 on April 24, 2021, 03:04:51 PM

Definitely Green

Ask Bryan about the bolts but I just torque up the main bolts.

Thanks for that - then I measure the width of the squash - this then gives me via a table a clearance based on the ratio of the original size to the squash the clearance is that the idea?

Title: Re: What size / colour Plasigauge do I need.
Post by: AshimotoK0 on April 24, 2021, 03:39:09 PM

The Plastigage is a filament that squashes between the crank journal and the shell when the cases are bolted together. It deforms to a permanent width film, the width of which is compared with the scale on the Plastigage packaging and is representative of the shell-to -journal clearance. 

Title: Re: What size / colour Plasigauge do I need.
Post by: Bryanj on April 24, 2021, 05:02:27 PM

Yes just the main bolts

Title: Re: What size / colour Plasigauge do I need.
Post by: McCabe-Thiele (Ted) on April 24, 2021, 09:29:14 PM

Quote from: AshimotoK0 on April 24, 2021, 03:39:09 PM

The Plastigage is a filament that squashes between the crank journal and the shell when the cases are bolted together. It deforms to a permanent width film, the width of which is compared with the scale on the Plastigage packaging and is representative of the shell-to -journal clearance.

Okay got it thanks Ash.