blah, blah. turbo!

beers

 

LOL, I don't like apples.


.

 

After all these years ................. I still don't understand you

 

very happy and jealous of your work!

trying to figure out my car future..

btw, still running stock rear gear?

beers

 

Stock diff yes , but 5 speed JDM gearbox (same as RX7 box)

 

I managed to plot one of your runs against mine . If we go off the MAF yours is clearly superior in the 5000-6500 range .... mine is before that and then they are similar up top.

 

Piping could be a concern, some info from some honda fourms

I think after the max it becomes restrictive
2" piping
1.57 x 2 = 3.14 sq in
300 cfm = 156 mph = 0.20 mach
400 cfm = 208 mph = 0.27 mach
500 cfm = 261 mph = 0.34 mach
585 cfm max = 304 mph = 0.40 mach


2.25" piping
3.9740625 sq in = 1.98703125 x 2
300 cfm = 123 mph = 0.16 mach
400 cfm = 164 mph = 0.21 mach
500 cfm = 205 mph = 0.26 mach
600 cfm = 247 mph = 0.32 mach
700 cfm = 288 mph = 0.37 mach
740 cfm max = 304 mph = 0.40 mach


2.5" piping
4.90625 sq in = 2.453125 x 2
300 cfm = 100 mph = 0.13 mach
400 cfm = 133 mph = 0.17 mach
500 cfm = 166 mph = 0.21 mach
600 cfm = 200 mph = 0.26 mach
700 cfm = 233 mph = 0.30 mach
800 cfm = 266 mph = 0.34 mach
900 cfm = 300 mph = 0.39 mach
913 cfm max = 304 mph = 0.40 mach


2.75" piping
5.9365625 sq in = 2.96828125 x 2
300 cfm = 82 mph = 0.10 mach
400 cfm = 110 mph = 0.14 mach
500 cfm = 137 mph = 0.17 mach
600 cfm = 165 mph = 0.21 mach
700 cfm = 192 mph = 0.25 mach
800 cfm = 220 mph = 0.28 mach
900 cfm = 248 mph = 0.32 mach
1000 cfm = 275 mph = 0.36 mach
1100 cfm max = 303 mph = 0.40 mach


3.0" piping
7.065 sq in = 3.5325 x 2
300 cfm = 69 mph = 0.09 mach
400 cfm = 92 mph = 0.12 mach
500 cfm = 115 mph = 0.15 mach
600 cfm = 138 mph = 0.18 mach
700 cfm = 162 mph = 0.21 mach
800 cfm = 185 mph = 0.24 mach
900 cfm = 208 mph = 0.27 mach
1000 cfm = 231 mph = 0.30 mach
1100 cfm = 254 cfm = 0.33 mach
1200 cfm = 277 mph = 0.36 mach
1300 cfm max= 301 mph = 0.39 mach

 

I measured the pipes, up pipe is 2.5" and down pipe is 3".

Brett, what spark plugs and gap are you running? I really want to get my BHR coil issue figured out. They obviously work for other people, not sure why I get better results with stock coils. I may try 9k's suggestion for stock trailing all around next.

 

CFM will be in the high 700s and the first 2' odd of my turbo hot-side pipework is 2" per the stock Greddy kit so .............. ......yes definitely.

 

I run the BUR9EQPs - not sure what gap they are .
Re the coils ... yeah it seems some have issues and others don't . Have dealt with a few people with those now and once all the obvious stuff has been tried .......... it has always boiled down to a faulty coil when there have been issues .

 

How is the water meth going?

 

There is a pressure variant to that also.

Calculator: Air Velocity through Piping | TLV

 

Just fitted the water pressure switch (thanks Logalini) to activate the "all good" light for the W/M . Will be more confident about playing with timing with that in place so will look at if there is anything to gain there .

 

any updates?

 

Did a 0-100mph log the other day . 11.25s on my first try . Under 11 looks like it's very doable with a better launch and faster gear changes.

 

468kms from 56 litres (19.4MPG)
Hamilton to Tauranga (over the Kaimais) and back plus Hamilton to Auckland and back

Might not seem that stunning for US readers but these are not flat straight roads, plus about 50kms of this was giving it a hard time in boost.

The most i ever got from a tank previous to this was 500kms from Wellington to Hamilton when NA at the speed limit the whole way.

 

What PSI are you running now ?

 

16-17psi peaking at just over 18

 

Sorry for asking that again... I just read back a few pages.

Soooo it looks like we have similar setups... I have some porting work done, and you have an upgraded fuel pump. You are also running W/M correct ?

My car is running pretty comfortably peaking around 14psi. Just wondering if I can get to where you are at ?

Edit: Maybe I could post a log for you to compare with ?

 

Yes .. started doing that once i went over 14psi

That would be great if you could post a log .

 

 

aftermarket apex seals and dowling does wonders
I think its time for some video's!!!

 

Yes, at the drag strip.

 

very good fuel consumption figures most NA cars will be happy with those numbers.

I usually get to 200km to half a tank in stop start driving to work situation. The average is around 15L/100km.

 

Yeah I was pleasantly surprised. I monitor every tank so I know it's improved since I did the mod a few posts back .