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TOPIC: Replace Head Nuts

Replace Head Nuts 03 Nov 2018 11:07 #793324

  • gordone
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I was thinking replace my heads nuts with some black one... but I have some questions around these.

1. If I replace one nut at the time, is there any risk the top gasket can be damage, its new from last year... and I don`t want to generate some exstra work?

2. Anybody know somebody selling black look head nuts for my 750 engine (92015-076) ?


Thank you.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Replace Head Nuts 03 Nov 2018 12:43 #793328

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As long as the head isn't dislodged you should be fine. What I would do is remove all the existing head nuts and then replace them, tightening in the recommended sequence with a good torque wrench.
I ride Z1's. I have a couple of '75's, plus an '80 KZ1000LTD. My lovely Sweetums rids a 1981 KZ550.
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Replace Head Nuts 03 Nov 2018 14:44 #793329

  • Nessism
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I'd do them one at a time. As for nuts, APE sells some nice ones but not sure if they are the same size as stock.

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Replace Head Nuts 03 Nov 2018 15:16 #793331

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Nessism wrote: I'd do them one at a time. As for nuts, APE sells some nice ones but not sure if they are the same size as stock.


I also think the best is to take one by one when it comes to the gasket.

APE, these you was thinking about, APCHN1000K?



www.z1enterprises.com/cylinder-head-nuts-ape-hd-set-of-12.html

Think these is the same one ?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Last edit: by gordone.

Replace Head Nuts 03 Nov 2018 16:57 #793333

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ape-store.com/shopsite/page18.html


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Last edit: by Nessism.

Replace Head Nuts 30 Nov 2018 10:18 #794406

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Somebody know if these will fit, seller inform about size and threads below?

OEM Kawasaki is also 10mm so they should fit, maybe they are some taller, but it should not be a problem ?
Looks like OEM is 17.5mm high and APE is 22mm, but that should not be a problem ?

APE CHN1000K

You are looking at a brand new in box complete "cylinder head nut" kit as shown in the picture (made in the USA) size10mm x 1.25 with 7/8 base diameter. These super heat treated cylinder head nuts are a must for high output engines. Help prevent blown and leaking head gaskets caused by the threads in the soft stock nuts stretching. APE nuts are machined from alloy steel and fully heat treated for maximum strength. All APE nuts come with "APE" stamped on the head, be ware of imitations..

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Last edit: by gordone.

Replace Head Nuts 30 Nov 2018 21:31 #794416

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They are a direct replacement.

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Replace Head Nuts 01 Dec 2018 00:34 #794422

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Thank you, APE said the same on email.

Nuts on the way in mail :)
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Replace Head Nuts 01 Dec 2018 17:34 #794456

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You won't be disappointed.
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Replace Head Nuts 01 Dec 2018 18:49 #794458

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gordone wrote: Thank you, APE said the same on email.

Nuts on the way in mail :)


FYI to Gordone
Big Jay IS APE
He definitely would know his products
I use those black nuts on my turbo bike along with many , many other APE parts
Dave
SEND PM WITH BOTM NOMINATIONS
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStopPerformance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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Replace Head Nuts 01 Jan 2019 09:14 #796010

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Thank you all, today have I replaced the head nuts:
kzrider.com/forum/11-projects/607213-650...gine?start=60#796009
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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