VF35
19 October 2006, 10:47 PM
#31
Originally Posted by RB5_245
What year did the spec c get a twin scroll turbo?
If it is a twin scroll it's not a direct fit to a classic. Will need headers and up-pipe too (possibly downpipe?).
Likewise if you're not going twin scroll on your new turbo same would apply.
NS04 - try reading spec'c'57 's post 5 or 6 times slowly and all will become clear
BTW I doubt anyone with a VF35 turbo would be worth while switching to larger than 440cc injectors (if you already have that big), at very most a little increase in fuel pressure should see them max out a shade after the turbo
Dave
If it is a twin scroll it's not a direct fit to a classic. Will need headers and up-pipe too (possibly downpipe?).
Likewise if you're not going twin scroll on your new turbo same would apply.
NS04 - try reading spec'c'57 's post 5 or 6 times slowly and all will become clear
BTW I doubt anyone with a VF35 turbo would be worth while switching to larger than 440cc injectors (if you already have that big), at very most a little increase in fuel pressure should see them max out a shade after the turbo
Dave
As for twin scroll on a classic - see my project thread
F
21 October 2006, 01:19 PM
#34
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Originally Posted by Butty
I'll raise it to 87% on pinks doing std fuel pressure - the VF35 was singing its heart out at 277 g/sec to do that.
Nick
Nick
How are you measuring it..? Also do you have any dyno figure..?
21 October 2006, 01:52 PM
#35
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OK, showing I'm really still a Newbie in terms of knowledge here :
What are ported and wrapped headers ? Anything to do with kebabs ?!
How much do they cost and how much does an uprated fuel pump cost.
And are they both necessary for, say 330bhp ?
What are ported and wrapped headers ? Anything to do with kebabs ?!
How much do they cost and how much does an uprated fuel pump cost.
And are they both necessary for, say 330bhp ?
21 October 2006, 06:10 PM
#36
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Originally Posted by andythejock01wrx
OK, showing I'm really still a Newbie in terms of knowledge here :
What are ported and wrapped headers ? Anything to do with kebabs ?!
How much do they cost and how much does an uprated fuel pump cost.
And are they both necessary for, say 330bhp ?
What are ported and wrapped headers ? Anything to do with kebabs ?!
How much do they cost and how much does an uprated fuel pump cost.
And are they both necessary for, say 330bhp ?
Not required, but a very good idea, as 1) the porting means that the turbo will come in sooner, which is a good idea as the bigger turbo will come in later than the TD04 so anything you can do to negate this in a WRX with a lower rev limit is a bonus! They will also liberate slightly more power. Wrapping is also a very good idea, as increased performance means increased heat and believe me, it can get toasty under that bonnet. This will adversely affect performance, getting them wrapped will significantly help under bonnet temps. Personally, I'd get in done!
Ns04
21 October 2006, 07:09 PM
#37
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Agreed with above.
I could not be doing without my car whilst mine could have been ported, so i went mental and bought headers and had them ceramic coated instead as i plan on keeping my car for a while wanted the best tbh.
Fuel pump is a must i would think, purely for safety and making sure you get the fuel to the place it should be!
I could not be doing without my car whilst mine could have been ported, so i went mental and bought headers and had them ceramic coated instead as i plan on keeping my car for a while wanted the best tbh.
Fuel pump is a must i would think, purely for safety and making sure you get the fuel to the place it should be!
21 October 2006, 09:04 PM
#38
Porting and wrapping isn't essential for 330bhp. I just ported mine to reach 333bhp and used the standard heat shielding. Porting is removing metal internally to smooth flow in the correct direction of exhaust gases. The wrapping is special cloth that is wrapped around the cast exhaust to keep the heat in them. Hot gas = faster gas speed (or something), which is good apparently. The downside is that it falls off after a while and it gets wet and steams/smells.
F
F
21 October 2006, 09:32 PM
#39
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Originally Posted by Floyd
Porting and wrapping isn't essential for 330bhp. I just ported mine to reach 333bhp and used the standard heat shielding. Porting is removing metal internally to smooth flow in the correct direction of exhaust gases. The wrapping is special cloth that is wrapped around the cast exhaust to keep the heat in them. Hot gas = faster gas speed (or something), which is good apparently. The downside is that it falls off after a while and it gets wet and steams/smells.
F
F
21 October 2006, 10:39 PM
#40
Originally Posted by jasonius
277g/s is good..! How are you measuring it..? Also do you have any dyno figure..?
How are you measuring it..? Also do you have any dyno figure..?I have yet to put it on a RR but have run the road dyno in Delta Dash and got 280/271 @ wheels when it was running 1.5 bar.
It has since been reduced to 1.4 bar as the bottom end is a std WRX.
Nick
22 October 2006, 10:57 AM
#41
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Originally Posted by Butty
I used Delta Dash for logging air flow etc.
I have yet to put it on a RR but have run the road dyno in Delta Dash and got 280/271 @ wheels when it was running 1.5 bar.
It has since been reduced to 1.4 bar as the bottom end is a std WRX.
Nick
I have yet to put it on a RR but have run the road dyno in Delta Dash and got 280/271 @ wheels when it was running 1.5 bar.
It has since been reduced to 1.4 bar as the bottom end is a std WRX.
Nick
remind me, what's your exact spec again..?
22 October 2006, 01:38 PM
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Originally Posted by New_scooby_04
Andy,
Not required, but a very good idea, as 1) the porting means that the turbo will come in sooner, which is a good idea as the bigger turbo will come in later than the TD04 so anything you can do to negate this in a WRX with a lower rev limit is a bonus! They will also liberate slightly more power. Wrapping is also a very good idea, as increased performance means increased heat and believe me, it can get toasty under that bonnet. This will adversely affect performance, getting them wrapped will significantly help under bonnet temps. Personally, I'd get in done!
Ns04
Not required, but a very good idea, as 1) the porting means that the turbo will come in sooner, which is a good idea as the bigger turbo will come in later than the TD04 so anything you can do to negate this in a WRX with a lower rev limit is a bonus! They will also liberate slightly more power. Wrapping is also a very good idea, as increased performance means increased heat and believe me, it can get toasty under that bonnet. This will adversely affect performance, getting them wrapped will significantly help under bonnet temps. Personally, I'd get in done!
Ns04
Still not clear what headers are and what porting them involves, although it's useful to know what effect they have ! Header = cylinder head ?
Andy
23 October 2006, 05:45 PM
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Originally Posted by wrxginge
Headers are the exhaust manifold. They go from the cylinder heads then join into one pipe that runs upto the turbo.
HTH
HTH
23 October 2006, 11:33 PM
#45
Originally Posted by jasonius
Good figs remind me, what's your exact spec again..?
remind me, what's your exact spec again..?Everything upstream of the sportscat was ported and topped off with a remap from Paul at Zen Performance.
Nick
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