Im lost, have you got it yet or getting it soon ?

 

had it a fortnight today

 

Enjoy in good health I bet it's an absolute blast to drive!

 

As awesome as this car sounds it properly takes the shine of it when you see a 800hp yb graph next to it. Hmm, you sure Tdi haven't just plotted one of Rods graphs onto a sheet and chucked Tdi on it,lol.
Supras are cracking cars though, wish i could afford one.

 

What are you on about

 

not really supra is hub power and rods is more boost on hot fuel i think.
the map on the supra is also on esso 97 ron.
says 300 kpa which is 3 bar but that is including atmo so 200 kpa or 2 bar boost pressure

 

Wheres the vids? doesnt have to be you hooning it doing 0-60 in 3/4 seconds, just some videos will do

 

Congrats on your purchase
If its a hub dyno you can add about 10% . Guess about 860/870bhp which is good Power . My graph (838bhp) is my old Spec we now have a GTX4202 fitted dont know the Power its now making but it must add 30+bhp. You can knock 60bhp off mine on pump.
It will go well be assured BUT you wont like it as a road car, boost is too late just like mine & will prove annoying under road conditions. If you drop the boost it will be poor under road conditions as the torque will die. After I finally manage a Topspeed run, im fitting a Borg 83/74 good for 780bhp but 800rpm better spool.
Fancy a 200mph challenge at Brunters, the lads would love that & i need something as a challenge.

 

But Rod this is a 3.4 6cyl Supra not a 2.0 4 cyl YB spooling up the turbo so characteristics should be different.

 

im yet to feel it all ive done so far is full throttle second gear from 2k to limiter and it was laggier than the graph suggests, i got past 5k revs and it just hit like a hammer and spun straight to the limiter peaking 1.6 bar.
the run was done in fifth gear so thats where abouts its gonna be relevant to the graph in terms of lag and i agree to an extent rod it is going to be a pig hence needing a lower boost setting for the road as it hits so hard its insane.
once im happy its safe il get it on a dyno and want cam timing altering for better idle and low end with quicker spool at the expense of some top end power. at the moment both cams are 4d retarded and should be accurate of verniers as they are hks verniers on hks 272 cams, so as far as i can see it has been set up to make big power all up top.
as for brunters rod i like the sound of that but not until im 100% happy with the car obviously.

 

I wasn't being serious mate,lol.

 

i know fella

 

Where the hell have i been??? Whats its mpg?

Nice car btw.

 

If you have to ask about the cars MPG, this is not the sort of car you would ever want to own

 

Thats why i wanna know, something with this power cant be alot of mpg, the red victor will do if i remember 4 mpg so this should get at least 10-15mpg

 

cruising back from devon 280 mile trip it did i had 1/4 tank left when i got home, so it did mid to late 20s mpg.

 

I agree but the graphs dont show a better spool.
If you look at the graphs its spool up is a tad later than the yb which surprised me. Also the torque dies far quicker than the smaller yb again im surprised.

 

not a fair comarison rod for a few reasons, 1 your engine has had major r and d done to extract the best mine has not, 2 yours is on engine dyno and realistically will be laggier on the road, and 3 2.0 bar boost on 97 ron at 11 afr was my run and yours seems to be 109 ron 2.8 bar, at that boost and fuel if my engine held together it would be over 1000 hp.
we are also on different turbos although i think my t51r spl is based originally on a gt42 and modified, rated to 1000 ps.

 

After reading this thread i'm sorry to say that both rod and scooby slayer have got it all wrong imo.

Wouldnt it have just been far cheaper and much better to just have a well spec'd series 2 like mo's lambo basher?

 

lol, i just spat my tea out!

 

totally agree spunked there life and money away ! still live and learn hey

 

One day mark shead will know as much as mo about tuning engines, but that day is a long way off still im sure

 

pmsl rofl

 

Got any specs for the HKS 272s out of interest?

Sounds like a very mild cam for such a long stroke, so I am amazed if those are the cause of the late spool, even if they are a bit retarded (not as retarded as mo though of course)

 

i dont know on lift but both are 272 d duration.
apparently with those cams and both set at 4d retarded it will screw up the idle and low end mid range in exchange for maximum peak power, thats what ive read anyways.
t51r bb turbos are old hat now so i assume newer tecnology turbos wil spool quicker, but i cant see that rods spools as quick as his engine dyno suggests when in the car on the road.

 

Retarding both will certainly move the power up the rev range, and will effect idle particuarly due to the change in closing point of the inlet valve, but even still I reckon the turbo is largely to blame for the spool.

With regards to Rod, on the dyno there is a lot of resistance, the graph is plotted from going to a value, then holding for a second, then doing the next plot point the same way, so its equivalent to a 5th gear run rather than a 2nd or 3rd.

 

Just went back to have a look at the graph...doesn't look all that particularly laggy for the amount of power it is producing but I assumed it would be a lot better off boost than it is being a 3.4.....

 

the turbo does seem to be widely known as laggy but im hoping with some tuning it will be abit more responsive, if im gonna have a little run with rod though i guess it will be better for that the way it is as looking at the graph above 5k revs is all big numbers.
the navigator is in coventry awaiting customs release so should be here for wednesday hopefully.

 

Dont spend too much money trying to de-lag a laggy turbo, sounds like pissing in the wind, better to sell it and buy a better one, will be cheaper in the longrun.

 

i wont mate, il know more once ive driven it properly, looking at the gtx rod has they are rated upto 1150 bhp and id assume will be less laggy also, are they dbb ?

 

Pretty sure the GT42 that its based on was, so I guess so but rod will know for sure.

 

Mate there is nothing wrong with that turbo it will be how the engine has been put together with the cams and head work you have to get everything working together.

 

Blimey that's good! Better than my old ST200 used to achieve!

 

Ive offered him mine +10k & he turned it down . It did 219.461mph on its speedo on the C2349 last wednesday a proper fast car .

 

The GTX4202 is twin scroll & ball bearing its a 1000+bhp turbo but mine cant flow that much. We now know a GTX40 would help with better spool & make the Power but its for an attempt at 214mph & puffs the boost easily so will stay at the mo.

Scoooby
did you know the Supra Topspeed record is 213.8mph think that had 900ish horses .

Chip would a hub dyno make the graph look worse than an engine Dyno it would account for what we are seing, that 2.6 should spool better than mine surely. If it does we cant really compare the spool from the graphs shown.

 

Being hub dyno or engine dyno wont effect spool but the ramp rates and way in which the graph is produced will.

On the dyno your engine was on, its given time to settle at each load site, most rollers and hub dynos arent operated like that.

A DD with a slow ramp rate will get very similar results though.

 

chip is the engine not put under more load on an engine dyno ? i thought it was so it will make boost quicker as its pulling harder.

 

Hello mate, read again what I said.

Its not the type of dyno that is the issue, but the way that the engine is allowed to rev or not.

The particular one that Rod was on, each point is plotted by setting an RPM limit and the engine not allowed to go past that for a second or two, which effectively means max possible load at the time the point is recorded, if you used a 10 seconds ramp time on a hub dyno or set of rollers though, you would get the same thing, likewise if you used a series of fixed rpm and measured power at each one.

So its down to how the tests are conducted.

 

yes mate you word things so well on an engine dyno your engine is at full load at each rpm point so makes maximum boost that rpm site can possibly make whereas the dyno run is just a pull through the rev range in one hit. i have a link to the original dyno run aswell on youtube

http://www.youtube.com/watch?v=KMx0lLW2tI4

 

I'm lovin' the look of that! I bet it's insane in a straight line!!!!