Author Topic: Engine degrease and oxidation removal  (Read 1282 times)

Offline Rozabikes Tim

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Re: Engine degrease and oxidation removal
« Reply #15 on: February 05, 2019, 08:26:57 PM »
I degreased mine with jizer, its perfect for the job, rinses off with water..... easy to use and readily available. Why do you intend to strip the motor? Is there a known problem? Does the motor look clean inside the rocker and sump? If so can you test the compression, if thats ok why strip..
Motor and whole bike stripped - see my recent 400 renovation posts. I just tagged onto old an thread when searching forum for degreasers etc. Motor badly needs paint and overhaul. Just cleaning frame up etc and was not really impressed by Jiser I was using. Although old, would not think it goes off?
« Last Edit: February 05, 2019, 08:29:49 PM by rozabikes »
One day I'll have the time to restore it, not just talk and dream....

Offline Rob62

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Re: Engine degrease and oxidation removal
« Reply #16 on: February 05, 2019, 09:23:53 PM »
I was just wondering if there was a known problem with the motor, otherwise i would have suggested running it to see if it was ok rather than jumping straight into a strip down, as these motors are very robust. Yes you have to work the jizer a bit for sure, but it rinses off easily. Mine had a lot of dried crud from the chain, all over the frame and motor, took some shifting.. but the jizer did work

Offline Rozabikes Tim

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Re: Engine degrease and oxidation removal
« Reply #17 on: February 05, 2019, 09:41:27 PM »
I was just wondering if there was a known problem with the motor, otherwise i would have suggested running it to see if it was ok rather than jumping straight into a strip down, as these motors are very robust. Yes you have to work the jizer a bit for sure, but it rinses off easily. Mine had a lot of dried crud from the chain, all over the frame and motor, took some shifting.. but the jizer did work
Yes it ran but smokey and rattly camchain.
One day I'll have the time to restore it, not just talk and dream....

Offline Nurse Julie

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Re: Engine degrease and oxidation removal
« Reply #18 on: February 05, 2019, 09:48:50 PM »
I was just wondering if there was a known problem with the motor, otherwise i would have suggested running it to see if it was ok rather than jumping straight into a strip down, as these motors are very robust. Yes you have to work the jizer a bit for sure, but it rinses off easily. Mine had a lot of dried crud from the chain, all over the frame and motor, took some shifting.. but the jizer did work
Tim doesn't jump in to anything too quickly, I think he's had this bike for many, many years. I have seen the bike in the flesh as it where and Tim is definitely giving her the love she needs.....at last 😀😀
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Green1

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Re: Engine degrease and oxidation removal
« Reply #19 on: February 05, 2019, 10:06:41 PM »
If you think Tim's 400 was bad wait till you see mine.  :-[
Current bikes
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Offline philward

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Re: Engine degrease and oxidation removal
« Reply #20 on: February 05, 2019, 11:23:14 PM »
I did it the old fashioned way with paraffin to get the serious oily gunk off, then Brillo pads, sandpaper, Dremel, lolly sticks with cloth around to apply Solvol, was hell on the fingers but it worked.

Cheers

Dennis
That's the way I do it too - long winded but like to feel I've done the rebuild of a project myself as opposed to paying someone else to do it (were ever possible) - gives a better feeing of achievement (and frustration sometimes!) I feel

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Offline Rob62

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Re: Engine degrease and oxidation removal
« Reply #21 on: February 06, 2019, 12:43:57 PM »
Just checked in the garage, it was actually Gunk that I used, not Jizer, the tin is still in there half empty...apologies for misleading  :-[

Offline AshimotoK0

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Re: Engine degrease and oxidation removal
« Reply #22 on: February 06, 2019, 01:15:32 PM »
Evidently the best stuff to use contains hydrofluoric acid which is pretty nasty stuff. Used to be used for cleaning oxidation off alloy wheels ...not sure if its still used because of safety concerns.
Still available off eBay though.

https://en.wikipedia.org/wiki/Hydrofluoric_acid
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Andych

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Re: Engine degrease and oxidation removal
« Reply #23 on: February 07, 2019, 12:22:20 AM »
I must admit I was a bit surprised when I saw that “Jizzer” was being used on the bike.....must have a different meaning in the UK to Aust...similar to Durex (sticky tape) and thongs ( flip flops ) 😆
1975 CB400 - Project
1978 Yamaha SRX250 - Project

Offline Rozabikes Tim

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Re: Engine degrease and oxidation removal
« Reply #24 on: February 07, 2019, 07:39:59 AM »
Ah that explains where i'm going wrong.... :P
One day I'll have the time to restore it, not just talk and dream....

 

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