apac

iTrader: (2)

has anyone successfully run a larger turbo on a late classic with the standard intercooler??

i've read somewhere that the intercooler is good for upto 330bhp. just wondering if i can bolt on a larger turbo and then just get a tweek of the ECUTEK mapping.
Andrew.

mike799

i have a my98 with a vf35 fitted running 1.4 bar boost standard intercooler just changed the hoses to samco,as the standard intercooler hoses are very restrictive.

ive had no problems at all (touches wood)

apac

iTrader: (2)

great to hear it Mike, i'm toying with the idea myself. can i ask what power your car is running at?

Joe2000

iTrader: (-1)

Spoke to jollygreen monster about this last week and he was saying the standard intercooler is more than capable for vf 34/5

apac

iTrader: (2)

this gets better and better. thanks joe. when i had my car first mapped Bob Rawle told me that I'd probably get away with it too.

mike799

yep jollygreenmonster said all i need to do was upgrade the hoses,not sure on figures but i can say it is a very quick road car

apac

iTrader: (2)

i think i'll go down the same road as you and get the samco intercooler hoses. did you port th waste gate on your VF35?

mike799

no i didn't,brought it from a fellow on hear.
only done 10k when fitted,don't suffer from boost creep at all

mike799

also you will love the vf35 spools very quickly holds very strong to the redline

apac

iTrader: (2)

cheers mike. that just what i want to hear. my car is currently doing an impressive 290bhp with the TD04, so i hope that with a vf35 for about £200 or so, and a tweek of the map for about £250, hopefully i may get antoher 40bhp and some more torque to go with it. this will be the last engine tuning mod for me as things have really reached their limits.

mike799

no probs,i'm sure you will love the extra torque

duncatr

iTrader: (18)

I'm also running a VF35 at circa 1.4Bar.

Makes for a very interesting road and occasional track car.

I fitted a HDI FMIC from Harvey Smith as I was planning going further and thought I would put it in while I was doing a lot of other bits anyway.

TBH it is a bit laggy with the FMIC so probably better sticking with the TMIC anyway Pulls like a train once its on boost though!!!

Another thing to look at is ported oe headers and a nice up pipe (no bigger than 47mm) That will help her spool even earlier.

apac

iTrader: (2)

Another thing to look at is ported oe headers and a nice up pipe (no bigger than 47mm) That will help her spool even earlier. [/quote]



i already have both ported headers and uppipe fitted by Harvey Smith about 2 and half years ago. led to massive torque figures. one of the best mods i'v had done for the money. when the car was mapped Bob Rawle could not believe the torque that the car was pushing out. before we went out on the road he said they propbably wouldn't make any difference. boy was he wrong.

apac

iTrader: (2)

i've also been tinkering with the GT FMIC from harvey but have realisd that perhaps it's going a step too far.

mike799

unless your going to go better in the future,front mount on a vf35 would be to much lag.

New_scooby_04

iTrader: (4)

From experience I disagree.

Lag increases on a good quality front mount with appropriate supporting mods are an SN myth.

I have gone from the std MY99 intercooler to a FMIC and the difference is night and day. I would not go back to a TMIC.

The MY99 intercooler will be right at its limits at 320+

Read my thread on the subject here....and take note of the excellent advice offered by the likes of Harvey, who has actually measured charge temps at different levels of tune and with different intercoolers

https://www.scoobynet.com/scoobynet-...e-go-fmic.html

Ns04

Tidgy

im running pretty much same mods as ns04 but im runing a vf34 as well, and i have to agree while the power band has gone higher up the rev range, due to the larger size turbo, the lag isn't there, as long as you take into account the higher revs then it pulls.

you can running 600bhp on a top mount if you realy wanted, but on a hot day then you'd be at a serious disadvantage and be loosing alot of power to heat. even at this sort of tune you'll find a difference.

heres the only back to back tests i know of,

http://www.scoobyclinic.com/download...coolertest.pdf

enjoy

apac

iTrader: (2)

fantastic article NS04. a really good read. i am tempted with a FMIC but then have to consider the induction also, and then injectors to make it all worth while, and then of course as per usual a £500 project turns into a two thousand pound one, and you are left wondering where all your money went. my car is already showing huge torque figures for its type, so not so worried about that side of things. i must admit that the chipmunk blender sound is one that i envy.
can this project be effectively done without a boost controller and bigger injectors? and if so would it still be worth getting a front mount and induction kit??
so basically as for my engine......it would be full decat, cotton filter, ported n wrapped headers and uppipe, walbro fuel pump, oh and uprated clutch, the original one didn't make it on the first attempt to remap. lol
so..........+ induction and FMIC, and VF35 (440 oem injectors and no boost controller).

here's the map that bob rawle did about two years ago. bear in mind that even he said the the bhp graph was o.t.t. but 290bhp was calculated by him afterwards. good for aTD04 eh! and the torque was said by Bob to be 'Huge'.

apac

iTrader: (2)

and cheers Tidgy, i remember when this was first posted by you or someone else on dot.org

StickyMicky

i have a 97 wrx, with the stock top mount

a td05 boosting to 1.6bar and a 2.5 bottom end and my top mount is now struggling over 100mph a bit

under 100ish its fine, although i think if it was belting around a track nonstop it would not be very happy after a few laps....

i had to remove a bit of timing and add some extra fuel at the top end when i was mapping it to keep the det away

Tidgy

lol, yeah. is a mates car, getting a bit older now, as in the article is a couple of years old, but info still correct

Tidgy

hate to say it matey but bobs figures are known to be ott

apac

iTrader: (2)

your just jealous m8 as i've done this for a fraction of the cost of most. lol . if i put the car on a r+r then i know i would not get the same torque figures as on the road. so all Bob's graphs will be out.
here's some of the notes that followed the mapping from Mr.Rawle

"Ok this will make you think, firstly power at 302 is probably a little optimistic, caused by the blip but she is doing a solid 290 and a bit which is what I thought, torque, that’s huge for a car like yours but I will say that big push was what was exiting me, Deltadash calculates power from rate of change of acceleration so the figures are meaningful although you would never see that on a rolling road as it can never mimic the loading that is seen on the road, depending on where she should still clip well past 300.
Boost at one bar is at 2800 rpm
Peak boost 1.47 bar from data logs settles at 1.35 to 5600 then tapers to 1.16 bar at 6500. Good at that as most cars end up at 1 bar or just under.

All the above derived from out 1800 rpm wot runs, if you apply throttle from 3500 rpm you get almost instant boost as that’s the sweet spot.

Told you she was good, one of the best cars of the type I’ve seen for sure".

Cheers

bob
(Bob Rawle nov 2006)

Tidgy

lol , yeah mate dont deny it lol

the td04 just aint up to those sorts of figures, tbh i should think it'll be somewhere down around the 260/280 mark ish, but its not all about figures

New_scooby_04

iTrader: (4)

Deltadash figures are not known to be that optimistic; Andy F's project WRX was withing a few bhp/lbs ft between that and the Dastel Dynos IIRC.

But as Tidgy says, headline figures are for pub talk. The figures you should be interested in are the in gear acceleration. What you want to know is how power figures translate to on road performance. That's what an RR won't tell you and what Deltadash does.

Ns04