To4'd another 2nd gen
Thread Starter
Senior Member
Joined: Oct 2001
Posts: 10,906
From: Peoria, AZ
Well its been a long time since I've singled a FC, so I thought I would share.
To4E 57 trim, 1.24 P trim turbine
Tial 38mm wastegate
3.5" downpipe
2.75" chargepipe, just pre-compressor water injection currently
3" ambient air intake
Hes got more pictures on his blog site; Blog
To4E 57 trim, 1.24 P trim turbine
Tial 38mm wastegate
3.5" downpipe
2.75" chargepipe, just pre-compressor water injection currently
3" ambient air intake
Hes got more pictures on his blog site; Blog
Thread Starter
Senior Member
Joined: Oct 2001
Posts: 10,906
From: Peoria, AZ
Originally Posted by 1988RedT2' post='892525' date='Jan 18 2008, 07:14 PM
I thought putting water injection upstream of the compressor was a bad idea?
If you're referring to compressor damage, as long as you've got a fine mist and its just a small pinch it works fine.
The big benefit however is how it changes your compressor map, basically a smaller compressor acts like a bigger one without the added " lag "
The car is getting post compressor methanol injection, along with some other goodies. It will however will retain pre compressor water injection..
Member
Joined: Jan 2006
Posts: 65
Originally Posted by 1Revvin7' post='892541' date='Jan 18 2008, 05:49 PM
If you're referring to compressor damage, as long as you've got a fine mist and its just a small pinch it works fine.
The big benefit however is how it changes your compressor map, basically a smaller compressor acts like a bigger one without the added " lag "
The car is getting post compressor methanol injection, along with some other goodies. It will however will retain pre compressor water injection..
The big benefit however is how it changes your compressor map, basically a smaller compressor acts like a bigger one without the added " lag "
The car is getting post compressor methanol injection, along with some other goodies. It will however will retain pre compressor water injection..
Where have you gotten this information? I'm not necessarily disputing it however I can't fathom why increasing the weight of your intake charge can enhance spool time.
Thread Starter
Senior Member
Joined: Oct 2001
Posts: 10,906
From: Peoria, AZ
Originally Posted by dguy' post='892610' date='Jan 19 2008, 11:53 PM
Where have you gotten this information? I'm not necessarily disputing it however I can't fathom why increasing the weight of your intake charge can enhance spool time.
The best place possible, personal experience.
It doesn't enhance spool time, infact it will slow it down a little bit. If down correctly, it won't be noticeable however.
What I meant to say is, a smaller compressor will act just like a large one, without the " lag " of a larger compressor wheel.
Garrett compressor maps are generated on a intake temperature of 70deg F. If you lower the temperature you will change the map in your favor, and vice versus with hotter intake temp charges.
Member
Joined: Jan 2006
Posts: 65
Originally Posted by 1Revvin7' post='892616' date='Jan 19 2008, 11:57 PM
The best place possible, personal experience.
It doesn't enhance spool time, infact it will slow it down a little bit. If down correctly, it won't be noticeable however.
What I meant to say is, a smaller compressor will act just like a large one, without the " lag " of a larger compressor wheel.
Garrett compressor maps are generated on a intake temperature of 70deg F. If you lower the temperature you will change the map in your favor, and vice versus with hotter intake temp charges.
It doesn't enhance spool time, infact it will slow it down a little bit. If down correctly, it won't be noticeable however.
What I meant to say is, a smaller compressor will act just like a large one, without the " lag " of a larger compressor wheel.
Garrett compressor maps are generated on a intake temperature of 70deg F. If you lower the temperature you will change the map in your favor, and vice versus with hotter intake temp charges.
Gotcha, you're saying that the decrease in temperature is effectively giving you a larger efficiency 'island'. I don't know if I'd advertise the gains how you worded it but I get where you're going.
