CB350 rebuild at home

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yasirsa (yasirsa) 2013-12-17 15:45:04 +0500 #321

Abbasi sab cam covers fitted removing 1 tappet cover gasket problem seems to be resolving

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msabbasi (msabbasi) 2013-12-18 00:07:27 +0500 #322

abdul_basit007;4174462:

Abbasi Sb! Seriously I am 101% agreed with you that its the fault of supervisor not the technician! That's why I left that place due to no gaining anynew things! Further i was rusting my self from different shortcut! Uncle i had complete my level 2 Automotive Engineering of City & Gills Uk few months back and in its studies i learned too much Alhumdulilah! Currently I am doing Be in Energy Engineering and its too much fun working in these types of engines on which you never worked before.
Related to the Impact Wrench and Torque Wrench, i agreed with you that torque wrench is made to tighten the bolt the bolts on correct require torque but i was too shocked when i saw my uncle controlling the torque of impact gun via a revolver. But I also asked him to tighten the bolt via torque wrench and the torque was said what he said to me via tightening the bolt from the impact gun!
Sir! seriously it is fun to use pakwheels and get the guidelines of seniors like you! Thanks a billion and plz pray for my good future!

I am glad to see that you have selected a career for yourself that you enjoy. May Allah SWT bless you and illuminate your path towards success.

msabbasi (msabbasi) 2013-12-18 00:14:22 +0500 #323

So what you are saying is that the gasket was too thick and it was stretching the chain too much? Well if that is the case, it is a relief that the new bushes are OK. I saw pictures of the head. I think with a 1mm paper with the special high temp sealant you already have, you should end up with an oil tight joint.

zebmirza (zebmirza) 2013-12-18 00:57:29 +0500 #324

nice job

abdul_basit007 (abdul_basit007) 2013-12-18 01:20:16 +0500 #325

Thanks alot for this wonderful dua!

Xulfiqar (Xulfiqar) 2013-12-18 01:20:29 +0500 #326

msabbasi;4173433:

Dear Abdubasit Sb.,

Please understand that speed of the impact wrench and torque are totally different things. We all learn as we go and I am eager to learn something new from you. I have worked in many locations all over the world as a maintenance engineer on some pretty funky machines including gas turbines with specialist from GE. I have used pneumatic torque wrenchs but in all my 30 years I have never come across one which tightens to a prespecified torque value. I'd love to see one or at least a picture of one. Normally torque wrenches are of the following types.

I don't agree with your comment about accepting shoddy work just because the company is paying the man a low salary. Son, when you get to my age you will learn that there are two kinds of people out there. Those you do shoddy work and those who take pride in what they do. Money never comes into the equation. A bad mechanic will do bad work even if he is getting million rupees and a good mechanic will do a good job even if he got 20 rupees for it. People who take pride in what they do just cannot bring themselves to do bad work. It is just against their work ethics to do bad work. That, son, is a lesson I hope you will learn someday as you go along. In the case of the 5S workshop where you got your training, it is not the fault of the technician who was using cigarette box card paper to make gaskets but the it is the fault of his supervisor for accepting such work.

I would also love to see an impact driver tighten to a specced torque value, I use them to zip up stuff then use a proper torque ratchet (torque wrench) to tighten up properly. - I bought a Hazet a long time ago and it was freakishly expensive but worth it, till today I have had it calibrated 12 times (once a year) and every single time its come up to spec without any change.

I also have an italian origin clicker low torque wrench to use for delicate stuff and one scale type too for the really really low torque jobs like checking drag etc.

I fully comply to your comment of workmanship, money does not matter when it comes to workmanship. If cardboard gaskets were accepted then that shop will have absolutely no legacy to look back to. They cannot look back and be proud of "hey I made cardboard box gaskets and fooled customers thats how this business stands till today". They will be forgotten as soon as the customer leaves the shop.

Xulfiqar (Xulfiqar) 2013-12-18 01:25:03 +0500 #327

the cylinder base gasket is too thick here, the barrel was sitting too high, this will seriously upset the squish clearance too, the OE gasket is only 0.4mm or something thick and is installed dry

yasirsa (yasirsa) 2013-12-18 02:49:28 +0500 #328

thanks

yasirsa (yasirsa) 2013-12-18 04:05:02 +0500 #329

agree with you but previously when i removed old 1
same size i found in it thats why i made the same .the head upper surface is very rough and chacha made thicker gasket

yasirsa (yasirsa) 2013-12-18 04:07:28 +0500 #330

simply 1 is more thicker than 2 . so what if i remove upper gasket and use silicon ?

msabbasi (msabbasi) 2013-12-18 05:18:52 +0500 #331

If the upper surfaces (location 1) are too rough then just using sealant might not work. I offerd this 0.4 ~ 0.5 mm gasket paper to you earlier. The offer still stands.

yasirsa (yasirsa) 2013-12-18 06:29:59 +0500 #332

hahahaha ab to kabool karni hi paray gi

yasirsa (yasirsa) 2013-12-18 06:32:45 +0500 #333

1 thing i do have normal standerd sheet and standerd sheet to chal jaye gi

yasirsa (yasirsa) 2013-12-18 11:36:33 +0500 #334

Making thin gasket if it wouldn't work than am calling 1122(abbasi Sab)

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Xulfiqar (Xulfiqar) 2013-12-18 11:58:23 +0500 #335

if the surface is rough then you need to get some genuine toyota FIPG or Hondabond FIPG as I mentioned earlier, it can fill up little voids and remains flexible too, it also does not come off easily. Apply a very very thin coating of it.

If you get some nice gasket paper like abbasi sb offers and cannot find some FIPG then apply some aero sealant (indian head shellac). It will seal up the case with guarantee. To the extent of using muscle the next time you need to remove the cylinder block.

yasirsa (yasirsa) 2013-12-18 12:25:16 +0500 #336

I have quality rubber type silicon and seriously am tired. I removed both thick gasket and made thin gasket Cuz I did listen you
And scroll uper pic this was my top position of piston that's why I remove lower gasket

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msabbasi (msabbasi) 2013-12-18 13:16:20 +0500 #337

Yaser Sb. Always at your disposal. You just have to say the word:)

Actually it is just math. Add up the thicknesses of the old gaskets and subtract that from the new ones you are making. The difference is how much the chain will become loose. 2~3mm should be enough to loosen it up in my opinion.

msabbasi (msabbasi) 2013-12-18 13:24:03 +0500 #338

Yaser Sb.,

At this time it is hard to say if the thinner gaskets will work or not. But logic dictates that the thinner gaskets will make the timing chain a bit slack and allow free turning of the engine. We are now very concerned about your engine rebuild and want to help you in every way we can. At the end of the day we all want to join in your jubilation at completing a good engine rebuild.

Good luck.

Xulfiqar (Xulfiqar) 2013-12-19 12:23:22 +0500 #339

I noticed that your pistons are recessed into the cylinder at TDC, but cannot determine how much (use a feeler here), This will create squish problems if its too much.

yasirsa (yasirsa) 2013-12-20 01:38:51 +0500 #340

at tha time when i took this pic the cylinder was not seated properly