Jump to content

Recommended Posts

  • Replies 40
  • Created
  • Last Reply

Top Posters In This Topic

  • Dark Knight Mafia Member No. - 666
  • Member
  • Member For: 22y 3m 27d
  • Location: Toowoomba
  ASNU said:
  Geeseman said:
In my experience there is nothing such as a cheap mod.

To get 270rwkw relaiably you'd need a Chip, injectors, CAI mod, valve springs and probably a cat back exhaust. You can do it cheaper but it may be to the detriment  of your $50K car. Running 290rwkw without a bigger intercooler is plain dumb, IMO. You'd need too much boost and it would be pumping too much hot air into the engine.

Exactly mate.

There are no cheap mods and regardless of getting more power out of the T valve springs will have to be done.I cannot see the standard exhaust holding up to any increase in rwkw without backpressure issues let alone air intake tempertures going threw the roof.I am not giving APS a rape but all things bought out in there kits are a matched set that makes the power advertised easily.You get what you pay for I spose.

Didnt Craigs car (BOOF) make close to this power levels at the wheels, it used stock intercooler, nearly stock exhaust.

Dazza.

  • Donating Members
  • Member For: 21y 7m 25d
  • Location: Sydney
  turb06 said:

Didnt Craigs car (BOOF) make close to this power levels at the wheels, it used stock intercooler, nearly stock exhaust.

Dazza.

He actually made 270 atw with the stock intercooler and exhaust. Personally, I wouldnt recommend this without changing valve springs, and even then I wouldnt do it. For the sake of a few grand you can purchase a proper set up and run that RWKW without issues. On a $50K car, that makes sense.

Im running that power level with a 2.5inch exhaust and I dont like to think of the thermal levels of the engine under load.

  • Site protagonist
  • Lifetime Members
  • Member For: 22y 1m 9d
  • Gender: Male
  • Location: At the lights, waiting for you.
  Geeseman said:
  turb06 said:

Didnt Craigs car (BOOF) make close to this power levels at the wheels, it used stock intercooler, nearly stock exhaust.

Dazza.

He actually made 270 atw with the stock intercooler and exhaust. Personally, I wouldnt recommend this without changing valve springs, and even then I wouldnt do it. For the sake of a few grand you can purchase a proper set up and run that RWKW without issues. On a $50K car, that makes sense.

Im running that power level with a 2.5inch exhaust and I dont like to think of the thermal levels of the engine under load.

My cars last tune with the 12psi map had 281rwkw's. I only used this map for racing and it was with 100octane petrol, (optimax + booster). My normal map was 10psi and had 262rwkw's (I think). I was planning on fitting a typhoon intercooler when they became available. Not for the extra power but for more consistant power. I was also told that 12psi was the limit of my stock valve springs and that any extra boost was causing valve flutter. I also heard of another "T" having valve flutter at 9psi, so the springs vary.

I also think that one of the more important mods is a good quality auto upgrade. Mine ran consistant mph all day at the drags and a friends with a minor mod dropped form high 112mph to 108mph, due to heat in the auto.

Geea. :spoton:

  • Member
  • Member For: 21y 25d
  • Location: Mildura

I've just had my T down to the dyno for some test runs with the shaker. I had the tuner put in larger injectors and was hoping for 270-280rwkw. My car fell short of this mark 256rwkw. Not because of intercooler or intake mods.

The reason why I did'nt acheive the result that I was after is because of the stock valve springs could'nt handle any more boost. There seems to be a big variation between each engine coming out of Ford.

So from my experience I don't think that there would be many cars that are producing 260+ rwkw are running stock valve springs.

Needless to say I purchased new one no all I have to do is change them. I hope I can find some spare time, about five hours worth and that's if you know what your doing. :spoton:

HELP PLEASE!!!

macka

  • Firm Member
  • Donating Members
  • Member For: 22y 7m 20d
  • Location: Adelaide Hills

Macka,

On the road your car would make more power than on the dyno because of the ram air effect, wouldnt it?

  • Member
  • Member For: 21y 25d
  • Location: Mildura

How it going Mondie,

I would expect that it would but it's impossible to know how much. Give it a bit of a squirt coming home near digers rest. Man it hit the rev limiter before I new it. It went like a cut cat. :lol: Still can't wait to get the better valve springs done. Chuck in some more boost, It will be awesome.

I still can't get over how quickly the engine lost performance once the exhaust valves reached there limit. :banem: It was instantaneous.

  • Member
  • Member For: 20y 10m 5d

Please don't flame me because I am new to this forum, just make your mind up on my observations on what is being said in this post.

I tend to agree with most of the comments coming up here (even though there appears to be some conflicting views). From my experience with turbo engines (which I will admit is very limited but rather intense over a period) I found the following:

The car was a mate's TD cortina 250Xflow EFI turbo (low stall C4 2.78 LSD). Not an XR6T - but similar beginnings you may say. We bought this thing not really knowing anything about turbo engines and had to learn very fast. It was a raw thing; Air Research T04 (standard 0.6 housing), microtech Digi 2 ECU (very basic 500rpm tune points - nasty handcontroller thing), NO intercooler, turbo grind cam, nothing special short motor, milled and ported alloy head, metal spacer head gasket, 4 inch exhaust etc etc (good enough but VERY old school and far from bulletproof). On 14.5 psi (42mm garret wastegate limited) with no cooler this thing did a 12.2@118mph, 2.4sec 60s (yes, massive MPH, sh*ty 60s indicating much more performance to be had with some better low end tuning and launch).

To try and cut an already long story shorter, we got greedy trying to up boost and with the minimalistic tuning power with the Digi2, and already no margin for error with super high intake temps etc, and for our trouble we gained a 12.4 with a massive KA-BANG 3/4 track (two pistons said bye bye and as did the turbo as it sucked in a million metal fragments - the light show from the exhasut looked pretty on the video at least!).

Back to the drawing board - rebuilt turbo (new housings, new higher spec trims etc), more porting on the head, new modest but stronger bottom end etc. In went the cooler and all the new plumbing. Silicon houses, proper clamps but whenever the right foot went down it would blow off the pipe. Again, to cut the story found out the wastegate was getting stuck and the boost was going up to 17psi and the pipe setup (with sharp bends - remember small room to play with in the corty bay) didn't like it, hence they blew off. We got the sh*ts one night and bypassed the cooler, replacing the old no-cooler pipes. With the wastegate not doing its job properly, no restriction from the cooler, the thing overboosted into a realm we'd never experienced before. The car exploded into a furry of gut-crunching boost (actually scared me how fast it took off whlst crusing at 80km/h and hit revlimit in top a flash later at scary speed). The Digi2 told us we'd seen 23psi for that short moment. Awesome yes, but next day I replaced three broken Yella Terra roller rockers and some ordinary looking engine oil; I suspect the only saving grace was the cool night air?

Moral of the story for me was that a turbo engine may have the ability to make massive HP when it is plumbed with plenty of boost, spark, and fuel, regardless of cooler etc, but don't expect it to hold together under all conditions, or particularly with average tuning and lack of reliability measures (like better valve springs, cooler inlet temps, safe boost limits etc etc). Any of these setup configurations mentioned (from simple mods to full kits) will be able to extract good gains, but as has been said we have to decide about how we want the power made and if we expect it to be safe pulling such numbers ALL the time. From what I have seen the people on this forum seem to be at least trying to keep these things in check with the focus on reliable power (but ofcourse a backyard hack turbo corty is much less of a loss if it blows then a $50K XR).

Hope that wasn't too long that you fell asleep....

  • Dark Knight Mafia Member No. - 666
  • Member
  • Member For: 22y 3m 27d
  • Location: Toowoomba
  geea said:
  Geeseman said:
  turb06 said:

Didnt Craigs car (BOOF) make close to this power levels at the wheels, it used stock intercooler, nearly stock exhaust.

Dazza.

He actually made 270 atw with the stock intercooler and exhaust. Personally, I wouldnt recommend this without changing valve springs, and even then I wouldnt do it. For the sake of a few grand you can purchase a proper set up and run that RWKW without issues. On a $50K car, that makes sense.

Im running that power level with a 2.5inch exhaust and I dont like to think of the thermal levels of the engine under load.

My cars last tune with the 12psi map had 281rwkw's. I only used this map for racing and it was with 100octane petrol, (optimax + booster). My normal map was 10psi and had 262rwkw's (I think). I was planning on fitting a typhoon intercooler when they became available. Not for the extra power but for more consistant power. I was also told that 12psi was the limit of my stock valve springs and that any extra boost was causing valve flutter. I also heard of another "T" having valve flutter at 9psi, so the springs vary.

I also think that one of the more important mods is a good quality auto upgrade. Mine ran consistant mph all day at the drags and a friends with a minor mod dropped form high 112mph to 108mph, due to heat in the auto.

Geea. :smilielol:

Craig, Did your car show any signs of any future damage before that fateful morning.

You ran it consistantly on the drag strip and it made lots of power in your lower tune maps which kind of contradicts what people are saying, not that I dont agree with Geeseman and the like because I cant afford to kill my $50,000 car either and plan to do all the failsafe things like auto mods and valve springs before a chip even goes on, and since my car dynoed a little less than some other cars did at stock levels my luck would say my valve springs are the sh*ttiest of sh*t and couldnt even handle an exhaust upgrade :lol:

Maybe people R&Ding there own mods (like Craig & BOOF) are leaving less margin for error than APS and Nizpro etc, and the T can take a bit more than we think.

  • Site protagonist
  • Lifetime Members
  • Member For: 22y 1m 9d
  • Gender: Male
  • Location: At the lights, waiting for you.
  turb06 said:
Craig, Did your car show any signs of any future damage before that fateful morning.

You ran it consistantly on the drag strip and it made lots of power in your lower tune maps which kind of contradicts what people are saying, not that I dont agree with Geeseman and the like because I cant afford to kill my $50,000 car either and plan to do all the failsafe things like auto mods and valve springs before a chip even goes on, and since my car dynoed a little less than some other cars did at stock levels my luck would say my valve springs are the sh*ttiest of sh*t and couldnt even handle an exhaust upgrade :lol:

Maybe people R&Ding there own mods (like Craig & BOOF) are leaving less margin for error than APS and Nizpro etc, and the T can take a bit more than we think.

The car had the incident on Wednesday 18th August, the previous weekend it had raced faultlessly at Heathcote. On the Monday Rob (Amberley Auto's) had emailed me my latest dyno graph and it was the best the car has had with peak power of 281rwkw's and a beautiful curve and large plateau of peak power all the way to redline.

I decided on Tuesday that the car was near perfect performance wise and I was thinking about brake and suspension upgrades.

I think my car had one of the best auto's in any "T" in the country and possibly the most usable power aswell. I know that there are alot of more powerful "T's" going around but I believe that the power my car had was the perfect amount for a daily driver.

I was that happy with how my car was that the next one will be exactly the same. The auto is already organised and I haven;t even got a car yet. The power mods will be the same aswell with the possible addition of valve springs if needed for the 12psi map. Both my maps are still in my Xede so they will be a good starting point.

Geea. :smilielol:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.



×
  • Create New...
'