Engines under forced induction

[KI11Z]

. . . get head fully rebuilt along with the p&p. probably wont bother with bigger valves or anythin though. . . .-steve

I'm having my head worked on at the moment (n/a styles) by a very reputable company who builds all sorts of engine for customers here and overseas; I raised the question with him with regards to people "losing" power after head work and he replied that there is no point in just doing a port and polish on the vr6 head as the size of the valves are well matched to the port sizing, just increasing the port size will only have you going backwards, also if you don't raise the rev limit after a head job (:p) you'll go backwards again. If you don't want bigger valves just have someone give it a lil clean up.

I also doubt it would be worth your coin getting decent head work done if your going fi, its not cheap and the gains would probably be minimal since your forcing air in there anyways . . .

. . . . either way i go, FI is going to be more expensive because i'd have to fork out for the parts of rebuild, and on top of that the FI parts.

-steve

if you don't get head work and run stock pistons with a head spacer i don't think fi would be more? n/a is a far bigger exercise, to do it right, lightweight components like rods, retainers, lifters.. high compression pistons, stand alone computer, balancing components to cope better at high rpm, proper head work incl. cams, anything else? I doubt you need to do any of that to go fi, bolt on 5k kit and drive away . . .

[Shteifen]

hmm... yeah i'd rather not go over kill on heaps of work. im really lookin for an engineand head rebuild/refresh and thought while im in there i might as well make everything a little better, stronger really. a bit of a head clean up sounds good, cos like you said, if FI is used it dont have to flow quite as well as it would if it was NA.

i know this has been talked about alot before, but would it be cheaper to buy a complete kit from the states where you'd just buy it and chuck it on? or to go to a performance company here and get them to put together a kit, or put one together yourself?
ebay kits are ofcourse out of the question!

-steve

[Shteifen]

are thee any complications with reusing the old pistons in a rebuild? especially if honing is done? would there be tolerance issues? like too much gap?

-steve

[Jarred]

I would look at getting a kit personally, perhaps you can organise to only get the parts of the kit that you need, rather than getting US spec stuff, like DP's and software you don't need.

Kit would probably be cheaper, and that way parts are (or atleast should be) matched.

[Shteifen]

tis a good point.
US kits dont fit ours cos the brake master cylinder components and steering junk are all in the place where the turbo sits right? and with supercharger, the brake M/C and reserviour sit where the intake pipe'll go?

to do with management, would a simple FI chip written for my ecu do the job or am i gonna have to go for standalone?
-steve

[Jarred]

if you keep it below like 7psi, the stock ecu can handle it, above that the stock ecu fries aparently..?! This is only what i've heard mentioned a couple times.

I believe Seb, (bug_racer) was working on something though.

[Shteifen]

ive been wondering how much a stock ecu can take! my brother said his bmw e30 is supposed to be able to take about 7 pounds too, and he asked me about mine and i said i assumed ver little, that id never heard it mentioned that it could take it at all.

i suppose to account for atmospheric pressure differences they'd have to build it with that in mind, but atmospheric pressure doesnt differ to the extent of boostin, but still, tolerances to an extent.

7 pounds you've heard? with the lowest boost kit runnin 6 pounds, thats a bit close for me to be comfortable with but thats still good to know
-Steve

[peedman]

you'd be stupid to spend 3k+ money into a turbo kit and not get the ecu reprogrammed to run the tune...

[Shteifen]

absolutely! theres no way id do that, thats what guys at my tafe do!
thats why i was askin about it, i wanna figure out which route is most cost effective

-steve

[mk1turbo79]

I don't now where people are gettin the 7psi max on stock ecu. VF stage 3 is running 10psi on stock ecu with a giac chip.

As for the S/c kits fitting in a RHD, i know the VF stage 2 fits no problem with good access to the brake reservoir.

[peedman]

I don't now where people are gettin the 7psi max on stock ecu. VF stage 3 is running 10psi on stock ecu with a giac chip.

As for the S/c kits fitting in a RHD, i know the VF stage 2 fits no problem with good access to the brake reservoir.

I think they are talking about running a turbo without touching the ecu i.e. no chip no nothing. If i had the dosh i would rock a kinetic stage 3 turbo kit but the price is.......wait for it........$4250USD

[Bug_racer]

Kinetic wont deal direct with people here cause our ecu's are different and they will not deal with people here on an individual basis . I'll have an Australian spec ecu available shortly . The stage 1 kits here will be approx $4500 with the current exchange rate .

[Pullstarter]

That's a good proce Seb!! Are you using the Kinetic kit on your build?

[VR6man]

As an owner of a turbo car (not the VR6 lol) you need to consider how you will use the car.
As a daily driver there will be a limit on how much power you can actually put to the ground.
Are you willing to upgrade your brakes and suspension, put in an LSD.
I would rebuid your motor especially if it has high kms.
Add low comp pistons, new rings and bearings and general machining.
Clean up , reco and resurface the head, reseat the valves and better valve springs.
Custom manifold, GT3082R turbo (Ball bearing turbo) with internal wastegate, braided Oil & Water lines, etc etc etc etc .
And a custom tune.
If you want some contacts just PM me.

[Shteifen]

oh i talked to VF about their supercharger kit for mk3 vr's and they dont make them for it anymore. and dont have any plans on making them again

kinetic didnt seem to have a problem with sending one over the second i emailed them though? Mark Ashcroft was the guy at kinetic i was talkin to. regarding ECU's he said he'd talk to the C2 about it but didnt get back to me about it.

this was back in march for both companies that i talked to

4500 sound reasonable Seb, thats for the turbo kit yeah?

GT3082R is pretty big isnt it? i mean its not massive but its on the larger side of say the T3/T4 that comes with a kinetic kit isnt it? (i dont knwo much about different models or specs of turbos and compressors and whatnot btw)

-steve