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Home > Help Needed / General Tech Chat > 5/16th block/gearbox mod

wolfie

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8215 Posts
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Somewhere around Swindon

18th Sep, 2021 at 11:18:17am

Is it still worth doing doing the 5/16 bolt mod between engine and box?

Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead !


"A common mistake that people make when trying to design something completely
foolproof is to underestimate the ingenuity of complete fools."-Douglas Adams

jonny f

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Dorking

18th Sep, 2021 at 12:50:43pm

What would be the reason not to?

It seems to increase strength and reduce the chance of lift between the two.

shane

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2643 Posts
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Lowestoft, Suffolk.

18th Sep, 2021 at 09:12:07pm

For how easy it is to dots a no brainer.

Shane

madmk1

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5417 Posts
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Double hard bastard

brookwood woking

19th Sep, 2021 at 07:46:57pm

I have never done it lol

Maybe I am lazy then 😂

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


John

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10022 Posts
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Mongo

Barnsley, South Flatcapshire

20th Sep, 2021 at 09:15:29am

I think Dave used to sell some uprated cap-heads and hardened washers. I used to run those.

If something is worth doing, it's worth doing half of.

minimole23

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Wiltshire

20th Sep, 2021 at 09:43:29am

I did it because a long established engine builder told me to!

On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding

madmk1

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Double hard bastard

brookwood woking

20th Sep, 2021 at 10:50:50am

I just used good grade 1/4unf bolts and nice sized washers all was good 👌

Never ever have I had a block lift off a box

Used to have a head that lifted on the dyno lol

But never a block off a box 😂😂

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


Mr Joshua

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Member #: 1954
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Luton Bedfordshire

20th Sep, 2021 at 09:43:45pm

I swapped to bi-hex bolts the same as used on the jet pipes of gas turbine engines due to access on tightening.

Edited by Mr Joshua on 20th Sep, 2021.

Own the day


e5tus

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428 Posts
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Dorset

21st Sep, 2021 at 09:46:02am

I wasn't aware of this, makes complete sense. Will add to the list next time there's a need to split block and box. Always learning!

Mr Joshua

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Luton Bedfordshire

21st Sep, 2021 at 04:54:28pm

https://www.ebay.co.uk/itm/183773005074?has...ncAAOSwrv5cimpV
These aren't them but just for image reference

Own the day


Rammie2000

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belgium

22nd Sep, 2021 at 07:54:04pm

Why? How much force can there be between those 2 that it needs additional strength.??

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

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