How about this for a interesting thread for everyone...

How about everyone with a turbo mota do this quick survey.

VERY brief details of car- (ie Cossie, RST etc, what capacity, what turbo)
What RPM you see positive boost pressure.
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard)
What RPM and pressure full boost is.
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further).

I wish i could remember mine All i remember was even tho it was a T34 it still felt totally strong till past 7000rpm, no noticable tailoff even tho im sure peak was at 6500 max. Cant remember for the life of me what revs the fun began.

Did a similar thread on the GTR forum n it was interesting, a lot more people and specs here so should be even better.

 

ok here's one for my old car then

VERY brief details of car-

XR4x4 2.9 12v V6 - 2x T2

What RPM you see positive boost pressure.

1500rpm-1700rpm

What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard)

2500rpm

What RPM and pressure full boost is.

1900-2100rpm - 6psi


What RPM the power FEELS like its starting to tail off

5000rpm

 

VERY brief details of car - Cossie, T4
What RPM you see positive boost pressure: Can't remember never checked that, but I "think" from 2000 rpm onwards.
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard): 3150rpm - 15psi (1 bar)
What RPM and pressure full boost is: 3500rpm - 32psi (2.2 bar)
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further): Feels like it starts to tail off at 5500, but this is only due to the mid-range over-boost that has been mapped in. It was originally mapped at 27psi (flat boost curve), but in the car was given a mid-range spike of 32psi, which is there from 3500 to 5500, where it gradually tails of to 27psi by 6500, which it holds to the limiter, making peak power at 7000. This makes for a lovely car for overtaking things .

Did a similar thread on the GTR forum n it was interesting, a lot more people and specs here so should be even better.
Post up some of the interesting results then .

 

RST, full bling spec., all steel, NMS head, ceramic valves etc but with STD turbo....

Positive pressure at about 1500rpm, full boost at 2100 when it pulls hard. Runs out of fuel at the current 6k rev limit, so im hitting that all the time lol.

I have std turbo for running it in, and i havent decided what to fit yet. When i went to Stu for an initial setup, we were pretty suprised. It made boost 500rpm lower than a std car, and power was still climbing at 6k. Had to set the omex limiter to 6k, as after it was getting lean... Massive powerband, soooo easy to drive.

 

Mike-

Most interesting one was from bloke in Japan with a TopSecret 2.8 running a T4Z, about 750bhp IIRC.

+ve boost - 2500rpm
major action, 300ATW (0.5bar) - 3500
peak boost (1.7bar) - 5300
tail off - never seen it. shift at 8000 usually and it's still pulling

 

VERY brief details of car- ERST 1.6CVH STG3 T3
What RPM you see positive boost pressure. 1500RPM
What RPM and boost pressure the car starts to get intersting 2500RPM
What RPM and pressure full boost is. 3600RPM
What RPM the power FEELS like its starting to tail off DOESN'T TAIL OFF HITS REV LIMITER FIRST 6000RPM(STILL PULLING)
[/b]

 

Any more? Comeon there millions of us here

 

VERY brief details of car- Rst, 1,6cvh never been touched, so the lot is standard
What RPM - 2400
What RPM and boost pressure the car starts to get intersting - 3800
What RPM and pressure full boost is - 3500
What RPM the power FEELS like its starting to tail off - 5000

might edit them tomorrow..

 

Heres a few other interesting ones from the GTR board--

Standard R32GTRs with Stg1 conversions--
Boost from just under 2000rpm
Major action from 2800rpm (0.5bar)
Peak boost (1bar) 3400rpm
Tail off 7000+

Scooby Impreza with 2.5 conversion (no idea on power)
+ve boost at 1200
0.5 bar at 2500
1 bar at 3000
full boost 3500
no tail off at 8000

1000+bhp R33GTR GarageBomber demo car at LOW boost, 1.2bar, full boost is 2bar
Comes off "0" bar at 4000RPM
Goes ballistic at 5000RPM,
Shift as fast as I can to stop it going too far past 9500RPM (according to Tacho Memory - do you really think I'm going to look at the dial when all hell is breaking loose)

T78 Powered Mazda Rx7 with about 550bhp
Mad power from 3,000rpm-8,000 rpm (1bar)

Stage1 Toyota Supra TT
full boost at 1900rpm, all over by 6000.

 

Ecos - T34 , light blues comes on boost @ 3000 makes 415 ft-lb torque @ 3500rpm pulls like a jet fighter AB mapped it 4 years ago and its still goin strong

 

Cossie, t70 tbo

low boost 1.5 bar, high boost 2.7bar

pos boost @ 4200rpm

1BAR @ 5000rpm

Change up at 8500rpm still pulling like mad.

 

cos - T34

pos boost by 1500rpm

full boost at 2500rpm 1.6bar

shift at 6000rpm ( boost off at 0.8 bar )

all with 34mm restrictor in

no restrictor

pos boost at 1500rpm

full boost by 2500rpm

2 bar all the way to limiter no power loss @ 7500rpm

 

Cossie with T70 turbo running 2.7 bar


mines broken again so I dont know might have to get my dyno sheet out

 

Speaking of T70, whats the specs? Seen soo many varietys of T70s its unbelivable.

 

Think my old RST (1.6 cvh) was running stage 3 head and a stage 2 hybrid, and that was nothing below 3k than hold-on-tight as the whole lot came in at once

Used to tail off at about 5.5k I think, as it was getting weaker nearer the limiter

Ran about 1bar I think??

 

S13 200SX - 1800cc running a GT28R

starts building boost at about 2500 rpm
pulls really hard by 3000 rpm
full boost by 3500 rpm (18psi)
drops off a psi or 2 at about 6800 rpm (limiter is 7200 rpm)

 

3dr Cos
T34
What RPM you see positive boost pressure. 2400rpm
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard) 3000
What RPM and pressure full boost is. 26psi from 3200 to 7500rpm
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further). 7200rpm

EsCos
Hybrid T28/chip/ decat exhaust
What RPM you see positive boost pressure. 1700
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard) 2000
What RPM and pressure full boost is. 21psi @ 2200 held till 7500
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further). 7000

My pal Bambers 4x4 Saff/Trick T3 hybrid
What RPM you see positive boost pressure. 1100
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard) 1700
What RPM and pressure full boost is. 29psi held 2000 to 7200
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further). 7200

 

Cool.

Anyone else?

 

dont know never get tim to look at the boost gauge

 

Cab with RST engine. 1640cc 7.6:1 comp ratio 'stage 3' head 'stage 3' T3 285t cam vernier pulley GRS I/C etc

+ve boost at arround 3250 Rpm
interesting 'pull' at 3750 Rpm plus
full boost (12Psi ATM) is pulled and held to standard rev limit.
Power doesnt 'feel' like it tails off... it would probably happily rev its conkers off at about 8k i expect once the boost is upped it will be a little different though and the power will 'feel' like its tailing off as the turbo runs out of puff.

 

VERY brief details of car- (ie Cossie, RST etc, what capacity, what turbo)
Saph 4x4, T3, Stage 1 Chip
What RPM you see positive boost pressure.
On the rollers, 1500rpm (3.8psi), on the road say 2000
What RPM and boost pressure the car starts to get intersting (ie starts to really pull hard)
2800rpm
What RPM and pressure full boost is.
Again, on the rollers, 19.1psi @2500rpm
What RPM the power FEELS like its starting to tail off (maybe way past peak, but when it REALLY feels like no point revving it further).
bap-ba-bapapapapap (6800rpm)

Neil.