IP tweaks

G

Guest

Guest
Hi Julian
what is :''rev range''?
cheers
Lubo
----- Original Message -----
From: "Julian Voelcker" <[Email address removed]>
To: <[Email address removed]>
Sent: Friday, January 05, 2007 1:00 AM
Subject: Re: [ELCO] New member
 
G

Guest

Guest
Hi Lubomir,
rev is short for revolutions - referring to the revolutions of the
engine usually referred to Revs per Minute or RPM. This is what your
Rev Counter is showing (big dial on left).
As you put your foot on the accelerator from tick over the engine revs
increase and the turbo slowly spools up (it starts rotating faster)
increasing the boost (pressure of the air being blown into the engine).
I can't remember exactly with the 24valve engine, but the turbo doesn't
reach full boost until the revs are around 2,000rpm.
Up to that point the the engine isn't working that efficiently, so the
injection pumps are configured to compensate for that by increasing the
ammount of fuel going in, however with the 24valve engines they have
reduced this fuelling for emmissions reasons so if you have a 12valve
engine beside a 24valve engine, you will find that the 12valve engine
pulls better up to 2000rpm.
You wil often hear people refer to the 24valve engine being described a
'flat' before the tubo 'kicks in' - they are basically saying the power
curve (if you were looking at it on a graph of power against rpm) is
flat until the turbo reaches full boost (Kicks in) at around 2,000rpm.
The tweaks in the article I provided in the earlier message are aimed
at increasing the amount of power beiing produced before the turbo
kicks in.
As an experiment, park your LC on a flat road and then drive off with
your foot flat to the floor - as you see the engine revs go over
2,000rpm you should feel the car surge forward, which is the point
where the turbo producing full boost.
Sorry the above is a biit long winded, but hopefully it will help with
some of the English words to describe the engine's behaviour.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Skype: julianvoelcker
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
G

Guest

Guest
Hi Julian
now is better for me to understand and have the last question:
what will be the effect of the intercooler at low revs if any and if there
will be no effect why bother to install it(in a country like Norway where
the max speed is usually 80 km/h)
BTW I think my turbo spools up at 1600-the old one use to engage over
1800...
cheers
Lubo
 
G

Guest

Guest
Hi Lubomir,
The intercooler will provide an effect throughout the rev range, however it
will be more obvious at full power.
You best bet to get an idea of the impact of a good Intercooler kit is to
have a look at the graphs here:
http://www.airpowersystems.com.au/safari/turbo/1hdft/intercooler.html
Even through the max speed is 80km, you will get there quicker with an
intercooler and will be able to get up the sides of the fjords quicker ;-)
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Skype: julianvoelcker
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
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G

Guest

Guest
Hehehe
when you come to the fjords you don't want to drive at all-it is just
amaizing sight :))
conclusion:first-do the tweaks on the IP and after that fit the intercooler!
Now a bit of confusion. which one is better :Safary or Maartens?
cheers
lubo
----- Original Message -----
From: "Julian Voelcker" <[Email address removed]>
To: <[Email address removed]>
Sent: Sunday, January 07, 2007 6:00 PM
Subject: Re: [ELCO] IP tweaks
 
G

Guest

Guest
Hi Lubomir,
I don't have first hand experience of either, however I believe that
Maarten's kit offers better value for money.
--
Regards,
Julian Voelcker
Mobile: 07971 540362
Skype: julianvoelcker
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift
 
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