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Discussion Starter · #1 ·
Hey guys! http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >

I was going through the trackdays section and was wondering what do I need to do to prepare in my car if I plan to go to a track-day and have some fun? Nothing extreme mind you, just a little extreme g-force sensations! [img]http://www.ltregister.f9.co.uk/graphics/biggrin1.gif border|EQU| 0 align|EQU| absmiddle >

BTW, you guys really make me envious with all the race-tracks nearby!!! [img]http://www.ltregister.f9.co.uk/graphics/sad1.gif border|EQU| 0 align|EQU| absmiddle >

Another querry, I noticed that when other people drive my car, the oil dipstick always pops out. The 1st time, it was damaging(oil starvation ate the crank) and the 2nd time, well it seems OK for now. I guess this is excess oil pressure. What can I do to alleviatte this? Mechanic told me sometimes the car overboosts a little (boost spike for short periods), and this causes it. I'm somehow not fully convinced yet.

Anyone care to comment / inform the ignorant? HH6, I'm counting in you! [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >

Many thanks! [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >
 
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Discussion Starter · #2 ·
Botchi,
Only one thing cud cause yr dipstick to eject , that is high crankcase pressure.

This wud be caused by blowby of combustion pressure past the piston rings or possibly worn valve guides.
Does your V use oil or smoke (blue) from the exhaust?

Prolonged large throttle use wud show up crankcase pressure problems , like high cruising speed on motorways , do yr other drivers have this habit compared to u?

Must say that there is NOBODY I wud trust to drive my VI , I have various mates , even girlfriends who relentlessly work on me to have a go , but I say this , I even refuse to permit my own father to drive it so u have no chance
 
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Discussion Starter · #3 ·
I agree with Evoboy.
I also assume a blocked breather hose would also cause a similiar problem?
 
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Discussion Starter · #4 ·
Thanks Evoboyand HH6,

Yep, I think I remember now. The first time it blew, we were cruising at about 190km/h @ 6,000RPM or so for about 5-7 minutes straight on a particularly hot and humid day(can be fun!!! http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle > ). That was when it blew really really bad! [img]http://www.ltregister.f9.co.uk/graphics/sad1.gif border|EQU| 0 align|EQU| absmiddle >

Second time, another friend was driving it, and well the dipstick just poked out, there was no oil spewing out. I guess it was just relieving itself then eh?

I dunno, all my friends who drive it say it shouldn't do this and that, that its a rally-car and should be tough etc. etc. Well It's easy to say so when you aren't picking up the bill eh!? [img]http://www.ltregister.f9.co.uk/graphics/sad1.gif border|EQU| 0 align|EQU| absmiddle >!

The funny thing is, when I drive it hard, this doens't happen?!?!?! Am I doing something right? Or is everyone here just plain mechanically unsympathetic?!

Many thanks anyway! [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >
 
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Discussion Starter · #5 ·
The only thing I do for a track day is increase my tyre pressure to 40 psi. Otherwise check your fluids are at the maximum and take some spare front brake pads - its no fun driving home without brakes!
I also agree with the other comments regarding a blocked breather.
 
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Discussion Starter · #6 ·
Decided I wanna do some little investigation on my own. Facing the engine, I got stumped. WHERE IS THE BREATHER HOSE? http://www.ltregister.f9.co.uk/graphics/sad1.gif border|EQU| 0 align|EQU| absmiddle >!

HH6, Evoboy, can you tell me where it is then? Many thanks!!! [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >
 
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Discussion Starter · #7 ·
As far as I can remember (no manuals or car to check at the moment) it sticks out from the centre of the right hand side of the rocker cover. I will check tonight in my wsm (and my car hopefully!)
btw what do you have? E4 I seem to remember?
 
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Discussion Starter · #9 ·
Your point is Mouton?
High crankcase air pressure will cause the dipstick to pop out. The only place that high air pressure occurs is in the clyinder so it will mean that this high pressure is leaking into the crankcase. This can happen as high pressure will always will try to escape to a low pressure area. If the piston rings are worn or broken the high pressure can escape that way into the crankcase. Also if the valve guides are worn then high pressure can escape into the clyinder head and then down into the crankcase. The breather hose also connects the clyinder head into the intake system to recirculate any oil fumes back into the combustion chamber to be burnt. If the breather hose becomes blocked or as sometimes happens collaspes because it is perished then obviously there is no escape route for the gasses and pressure will build up creating a blow back on the dipstick.
Over filling with oil will also create higher internal pressures.

The breather hose is indeed on the top centre right hand side of the clyinder head and connects to the intake system(air hose). Take this off and check for any signs of blockage or collaspe. The gasses the oil produces eventually rot the rubber type breather hoses inside out with showing any sign of damage from the outside but it blocks the hose. On a fairly new engine though the pipe should be OK but it also best to check the least expensive options first! I remember changing one on my old TR7 (stop laughing!) and after partically cutting it in half length ways it peeled itself apart all by itself over the next few minutes because of the rotted inside.....very weird to watch it!
 
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Discussion Starter · #10 ·
Visit the Power Engineering website http://www.powerengineering.co.uk/mitsu/index.htm

Go to Advice and Track Days.

A very informative article on track day preparation.
 
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Discussion Starter · #11 ·
Again many thanks HH6! I knew I could count on you! http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >

I seriously doubt it has anything with the engine internals, as I just had my engine rebuilt this December. However, for peace of mind I will go on a compression test soon.

Many thanks! [img]http://www.ltregister.f9.co.uk/graphics/happy1.gif border|EQU| 0 align|EQU| absmiddle >
 
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