compression

[ptr1968]

Hey folks, am new here from Holland.
A year ago I bought a Hilux pickup 2.4D 1992. (no turbo, 2L engine)
Gave it a XADO treatment, it had 165000km onit.
Recently I put a LPG mix to it (10/90), results are good after 2000km now, more power at low rev., engine more quiet. Pics: https://picasaweb.google.com/ptr1968/HiluxLpgDieselMix
The car drives very sweet, pulls up well, starts at a split second, and 1L to 13.5km this Summer

Now i have tested the compression yesterday; 580-600psi.
Max. should be 455psi (haynes)
Am a bit worried for the head gasket now cause of the high compression, should I ?

greetings,

Peter

[lord_flashart]

Greetings, someone with an answer should hopefully be along soon!

[shokenore]

Is there a particular reason why you tested the compression ?
Probably just carbon build up on the piston crowns and the combustion chambers.

[TonyN]

Thats very high, hard to imagine how its can be that much more than stock without being deliberate.

I don't have the Compression pressure on a non-turbo 2.4, but 2.8's which are normally asperated are only 10 psi or so higher than the turbo 2.4 motors.

Are you sure of your results? Maybe a really thin head gasket has been fitted in the past, and/or the block or head skimmed quite a bit.

You can't do much about it without stripping the motor, so i'd just go with it and see what happens.

[ptr1968]

Shokenore;

I tested it cause of more stress on the head due to mixing LPG with it.
Could be carbon , that's solving maybe (LPG).

Tony;

Haynes says that turbo engines are max 425psi, N/A 455psi.

I bought a new compressiontester, it was a cheap one though...

The headgasket is medium thickness 1.55mm.
A skimmed head could be it yes.
Maybe I open it up when I have some time, on the other side as long as it runs nice...

Further I can think of is the Xado treatment, they state on their website,
it can give higher compression. (had good experiences with previous cars)

30% increase seems extreme to me.

Pete

[yorta2]

You know, I read about Xado about 7 or 8 years ago and how it had been used to renovate locomotive engines in the Soviet (somewhere) and also machine gun barrels in a similar area. I thought it was 'snake oil', but as it has been around for quite some time now and as there are dealers all over the world, I am beginning to wonder if the theory (and the product) may have some substance. Can you please enlighten us?

Just about every article that I have read on Xado has been put out by Xado, and their adverts have been published in quite a range of magazines, but I haven't ever seen much reliable supporting evidence from users. I'd like to try some of their products, but then don't want to line the pockets of thieves.

[ptr1968]

Apart from Xado people, its a bit difficult to get independent info of people who actually used it.
Many people are writing on the net negative about it, offen without trying.

I started using it when I saw the Russian Kamas truck (Dakar rally) sponsering and using it.
I did it on 5 cars now, all with 150-200k on it, 2 were petrol, 3 diesel. Overall I noticed a smoother engine, about 10% lower fuel use, less overheating.
Sofar in all cars I had no bad effects. I've also used their engine oil 10W40, about the same as the Castrol I normally use.

When it was new they said 1 engine treatment was good for 100.000km, now they say its good for 50.000km.
The carspare shop I buy it they have cut the sales price also in half.
The guy from this shop told me that a taxi company has good results with it.

Here are 2 men testemonies from Saab club Holland:
http://www.docstoc.com/docs/50528108...he-Netherlands

Another local here from an engine overhaul company one time stripped an engine treated with Xado; he saw green stuff (ceramic?) on the cylinder walls.

Don't expect wonders, that's another department, but it can makes things last a bit longer.

If you want more power, then LPG is a good option, for turbo engines it workes much better, read:
http://www.dieselperformanceproducts...ls.html#toyota
The system is also easily homemade, with a evaporator and needlevalve.

Peter



Pete

[yorta2]

Thanks, Pete. I will wait for some further personal and individual comments. Please, anybody.

[ptr1968]

Found out trough some experienced people that higher compression can't hurt if there is not much carbon.
They said its a good condition then, also they experienced this with VW tdi's.

Pete