If I can do 0-128 in 11.9 what's a rough idea of my 30-130 time?
Cheers Rich

 

next march at raf marham

 

a bit more recent

 

i missed that one lol

 

quick, i reckon you would be in the 10s, from your pod terminals you are making some good power

 

robw, now find RossW's time from a few years back, although I fancy Andy Forrest to beat that soon!

 

this is the only one i can find

 

2wd or 4wd ? That will impact on your 0-30 time, as well as traction available from 30 to wherever you regain traction.

 

2WD 3 Door Cossie

Rich

 

Rob, just looked and Ross did a 5.84 in 2010 on a GT42 with a poorly engine! He downsized to the GT35 the following year and still went sub 6 as can be seen in your list.

 

As a very rough guide...and it is rough. 60ft should take you to about 30mph. So take your 60ft time off the overall.

But if you're making any power, you're going to have huge traction loss above 30mph too which will kill the time.
At Santa Pod you may well still grip there though. So using a time derived from Santa Pod data will be faster than you can achieve on an airfield

2wd cars will just suffer loads on the slower speed regions.

 

If you know your 60ft time, this will give you the speed.

http://www.wallaceracing.com/60-footmph.php

 

The problem with a lot of calculators like that, they assume automatic cars which have great traction.

Trying some data I know from my own car at Santa Pod, it's an easy 6-7mph out, and that's with pretty good traction.

 

At the Hillclimbs and Sprints I do they always measure your 64' time so off the line on normal tarmac not the super sticky stuff you get on the 1/4 miles is between 2.30 and 2.70

Be nice if I could achieve a sub 10 second 30-130

Rich

 

Ive checked that out on local hillclimbs too. At low traction venues it's only on very rare occcasions Ive managed under 2s 60fts.
Comparing to hillclimbs, regardless of car, tyres etc very very few of them ever manage under 2s either.
So in that respect I'm doing ok...but it also highlights the problems with a manual transmission rwd car trying to launch.

And to make it annoying...Ive seen a bog standard AMG automatic merc on normal road tyres pulling a 1.8s 60ft on an airfield !

We really need to try and make the launch rpm as low as possible so there is less of a shock to the tyres to break them loose, but also manage power to move the car forward.
A controlled clutch slip would be the best option, but you'd go through a lot of clutches and flywheels !

But I think this is all way off topic lol

 

There was a Mercedes SL63 AMG competing at Curborough in my class his 64' wasn't great at all Run 1 - 2.99 Run 2 - 3.14

Nobody did a sub 2 seconder all day the Single Seaters getting the closest best 64' of the day was 2.05 By a Force LM 1600cc Single Seater

Rich

 

I don't know how accurate that one is as I've never had my 60ft mph measured, but some of the other calculators on his site are pretty close for my Gtir.

 

incredible times especially on a 35

 

ive just checked all my logs and ive actually done 30 - 130 in 11.9 so far. if i can do 10.9 i will be content, for now .....
manifold is off again getting proper machined this time perfectly square, hopefully onces that sorted and not blowing i can get back to near 1.6 bar boost where it should be.

 

hows it going sub 6 on a gt35 ? that is crazy fast , i assume its a proper specced 30 - 130 car with custom gearing etc ?

 

When are you going to start running some man boost

Steve

 

i want 2 bar but abbey advised against it.
the problem is im running a 0.85 a/r housing which will be too much of a restriction to push it to far but atleast its giving me the best response possible the turbo is HUGE ! although saying that i had a t4 on a cossie on a 0.63 exhaust housing running 2.2 bar and that was ok. not sure what to do yet maybe try 1.8 on mgts dyno and see how it goes, i want to get it upto the 1.6 bar it was mapped at first and i gotta stop the manifold blowing to do that lol

i also dont want it to blow up like the 4i did lol

 

thats the thing capacity rules no silly boost spykes needed

 

Boost had nothing to do with the death of the 4i

Mine didn't have a spike, just shed loads of booooooooooooost lol

Steve

 

iirc the bottom end failed didnt it, started knocking ?
lots of boost will create more load on the bottom end, im not saying it made it fail but it will reduce it lifespan 100% mate.
now get that real cossie running some proper power

 

is it a T3 flange or T4 ?

GT 4094 should have a large turbine ? Cant imagine a T4 0.85 being that small

Ive ran a much smaller PTE 6262 T4 on 0.84 to 2.8 bar boost before. Yes EGBP was also very high, but it still worked bloody well ! It's 62mm turbine wheel is tiny compared the much larger Garrett
Didnt really make power worth the increase though from 2.4 bar to 2.8 bar

IMO your best option is just to buy a more modern and smaller turbo. It will spool far faster and make more power/torque everywhere. I'm sure your existing unit is still quite sellable.

 

t4 stevie, it doesnt look very big the turbo looks all compressor, the front end is like the supra turbo was like a gt42 with a snotty little back end on it. possibly right though mate the only way i would know is try it on the dyno and see what it does.

should be worth good money its only done 4k miles if i decide to out it. i want the maximum out of what ive got first, if im not happy then i will look at changeing, they rave about borg and precision on supra forum so would prob try one of those, cheaper than garrett aswell.

my leaking manifold certainly wasnt helping boost though so shall see what happens once thats sorted properly.

 

took a few pics today while i was out in the barn.





my gt4094r is twin scroll 0.85 a/r, being twin scroll is the exhaust housing more restrictive than a 0.85 a/r single scroll ?
and with me running the small exhaust housing with a blow on the manifold once im getting up into the revs and the back pressure within the turbo is increaseing that would make my manifold leak get worse and keep reduceing boost wouldnt it ?
ive got a laptop so i also need to see if i can hook up to the hks fcon vpro and datalog i could check myself then exactly what the boost is doing.

 

karl have you got the fcon software as its a dealer software only

 

i havnt mate, but ive had fcons mapped twice now and i dont think they had official software to communicate.
i gotta look into it.

 

well i had the manifold skimmed by a machineist i know he put the manifold in his mill on the jig i made and squared it off with what looks like about a 10mm cutting bit, the centre has had rangeing from 1mm upto 3mm taken out, ive fitted the manifold back with a new cometic multi steel gasket, i used no paste this time either as last time the paste was sealing it but as soon as i nailed it it was blowing again, it didnt blow at all on start up or driveing round to the garage off the ramp so hopefully all is good, just need some sensible dry roads to take it out now and see if it holds anymore boost. fingers crossed shes all good now for abit of fun at santa pod next year.

 

well im just waiting for dry weather to mot and tax it as its run out and dont wanna drive it in this weather. i washed it for the first time testerday since i bought it in september lol, i think she has scrubbed up really well with just a good wash shammy.
took some pics as you do








assetically it needs nothing for me im loving it, i just hope i get more mileage from it than i got from the supra lol

 

Loving all your skylines mate, I'm in the process of getting a R33 GTR myself at the min

 

cheers fella i have officially gone skyline mad lol
i was looking at old cortinas and capris but in the end the old datsun even filled the classic spot.
r33s are coming down in price now i guess they will sink inline with the r32 eventually, theres one on pistonheads for Ł7000 !

http://classifieds.pistonheads.com/c...odified/877888

 

I always wanted a skyline GTR for years but family commitments ment i had to put that on ice and had a evo 5 for a couple of years then sold that to be even more sensible and got a Golf GTTDi but some money has come my way and have been offered a R33 what needs a set of turbo's very cheap so time to live the dream lol

 

cool they are great cars imo.
just a small word of warning hopefully not relevant but its worth knowing, with the stock twins being ceramic the exhaust wheels can break up so ive read on gtroc, and somehow when they fail if the throttle is immediately backed of the engine can pull some of the pieces into the cylinder (iirc number 6 most likely) and damage the bore / piston.
if i was buying it id at least want to put a bore scope in there as it may need a strip down, unless its cheap enough anyways ?
either way good luck and enjoy, just stage 1 mods and they will make 380 hp all day long
cliff j gtroc at stage 1 r33 gtr r888s and a little lighter but still road car was well into the 11s 1/4s

 

cheers for the advice mate, i have reading up on it the twin ceramics and heard about this problem, lucky enough the exhaust wheel didnt break up on this one it only had very slight play on the shaft and the kid thought fuck it and was going to put a rb30 and big single in anways then left it in his dads garage then just never bothered with it as he had to move away with work etc so has offered it to me for a amazing price and its already got some goodies on it i.e exhaust, filters, nismo twin plate, arc intercooler and 18" BBS alloys and I already have a set set of stg2 twin steels i just bought off GTROC.

Plans are to get it up to 450-500 bhp so future plans are Apexi PFC and injectors but just want to get in on the road first and see how she rolls any ideas on what injectors I should be looking at to get up to 450-500 bhp as dont want to max out std injectors ?

 

my r32 runs 555cc injectors and -7 turbos there like n1 turbos tiny bit bigger than stock, 1.2 bar makes 388 lbft, 408 hub power on dynapack.
injectors see max of 80%, stock injectors are i think 444cc and will max out about 400 hp at stock rail pressure, im also still on stock fuel pump rewired constant 12v and stock afms although i am running them absolutely flat out ! lol

 

So, have you entered her in the 30-130 in March ?

 

no mate i havnt, to be honest i didnt think about, i havnt really driven it at all yet though tbh, i need some time in it to get used to it the clutch and shifts are different and i was struggling with it abit the few goes ive had in it, i will be at pod this year though at least for some rwyb.