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I fully support what rmw says. Truckers do not like giving up payload at all. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

You can hand start anything with the correct mechanism. The air pump and accumulator being one end of the scale and the jumping off the embankment being the other. You just need to build, store then suddenly release energy. Spring powered impulse starters for motor mowers being a very common...

TX12s are so cheap, they could be considered semi regular maintenance like replacing disc pads. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

I know what modern disk pads get. The point is what did classic disk pads get vs classic drum brake linings. In my experience when a similar car was offered with optional disk brakes, the disk brake option required more regular replacement. Maybe it was placebo or maybe small sample size or...

A properly done compression test with results that are actually possible would be a good starting point to sort this out. Also taking some notice of those who actually know something might be a worthwhile approach. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional...

Maintenance costs and downtime. Disc pads do not live as long as linings. No matter how much performance you build in it does not increase safety if the operator just uses the extra performance and leaves the same estimated margin. It saves time, but does not increase safety. A total loss...

Air If it is dirt cheap, no one expects it to work. If it's expensive it creates an image of quality and performance. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

It sure is a pretty simple experiment Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

The PTFE (Teflon) impregnation of anodised aluminium surface is a critical process. You need a PTFE that is a known particle size. I would need to find some very old literature to refresh my memory, but sub micron comes to mind. The pores in the surface of the aluminium need to be slightly...

Does it also stain PET. I don't know. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

Chris It's pretty hard to dye PE. I know some things will stain it a bit, but it is generally considered to be impossible to dye. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

PET will absorb a class of dyestuff called dispersed dyes. PE will not. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

It will not repair and will cause a considerable fire risk. Don't do it Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

I think you mean a Factory Workshop Manual. I think Mike is referring to a build log book that records everything done when repairing or more importantly modifying an engine. A Factory Workshop Manual is used to repair a car to factory specification or to a factory recommended repair standard...

The way I always test off road suspensions for binding is to jack the corner up and support on a stand, then remove the wheel and the spring, then use a trolley jack under the hub or brake or spindle and jack the suspension through its full range while also turning from lock to lock. Regards...

Ya think. Hm not metal but ceramic metal and at atomic level and nano, it now only needs to be organic and natural to tick every buzzword box. The point is if it really does plate out on the metal it will do so and wear off all the places you want it to stay, but build up in all the wrong...

No additive can put metal back into the bores or rings. Your piston to bore will not decrease, your bores will not miraculously become straight and round, your ring end gaps will not decrease and your ring side clearance in the pistons will not decrease. Most likely your oil will become thicker...

You don't need to add anything. There is nothing wrong with your compression unless the engine is running rough or burning oil and smoking. Regards Pat See FAQ731-376 for tips on use of eng-tips by professional engineers & http://eng-tips.com/market.cfm for site rules

Not if it comes and goes and was gone when you did the dry test. It sounds like an experimental error to me. Even closing the inlet at BDC should not change it that much, especially with a short duration cam as one would expect in an old Volvo as it came from the factory. Regards Pat See...

Load cycling certainly increases polymer temperature. An increase in temperature increases bot oxidation and UV degradation and I would think degradation of stabilisers. I think the rule of thumb is for every 10 deg C increase in temperature the rate of reaction doubles. Note this is a rule of...