Adjusting Boost

Bibiana Lim bibie at cyber-wizard.com
Mon Aug 11 23:40:22 GMT 1997


Simon,

Thank You for your kind words and feedback.

You wrote:
>I suffer from the same problem The engine I have at the moment has a 
>compression ratio of 7 to 1 and a large turbo (for a 2 litre), it is 
>slow off the line but once it hits 3500 and 15 psi it sits you back 

You bet! After 3500 it is unforgiving! But it is in the lower revs that
is not much of a runner.

>into the seat......I have tried a sorts of things to remady this (but 
>not NOS) running a boost solenoid helps but not as much as I wanted 
>so I am no building a twin turbo engine running at 10 psi but with a 
>compression ratio of 7.7 to 1.......it seems to me that if you don't 
>want to rebuild your engine NOS is the only way to go, for a small 
>investment the returns are great !
>
>If you want more power and the engine can handel it you can use the 
>cold start injector as a water injector this then allows you to run 
>more boost without worring about detonation..... 

I was thingking of an additional injector that activates on specific
rpm. What do you think?

>The good things about nos is that it takes away all the bad 
>points of a turbo, 1) eliminates lag 2) it acts as an 
>excellent inter-cooler, due to the fact that it is an expanding gas 
>it sucks heat from its suroundings.....
>
>The reason I'm not going with nos yet is because I want to get the 
>best street setup for my engine then add the nos ;-)

That's the idea...'coz everyone can go to NOS and that misses the fun
in a charming street setup.

>A friend of mine had a 1000cc motobike with turbo and nos !!! (crazy 
>man) the nos was activated by a switch at the throttle stop. The nos 
>ran for 2 - 3 secs to get ove boost lag........(the guy also owned a 
>motobike with a 351 V8 in it.......... and micracluriously he is 
>still alive ;-)

I must remind myself not to get that biker license...

>All the fuel system in any car does is control the ratio of fuel to 
>air most cars are tuned to 14.7 to 1 this is the ideal for economy 
>the best for power is 12 to 1 you can do this by either getting the 
>existing ecu tweeked (if possible) or putting in an aftermarket ecu.

>I'm running a jap turbo at the moment ........I don't care where it's 
>from as long as I go fast ;-) 

Zooommmmm.....man...!

>Good to see a woman interested in performance !
Like you say...as long as performance is the ultimate....Man or Woman...
a kick in the pants....is a kick in the pants!

Cheers

Bibie




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