3sge 3. gen. tuning Options

[TARManiAC]

Hi. I´m about to do a complete overhaul on my 3. gen 3sge. Bearings, toothbelt, seals, gaskets, and pistonrings. And while I´m at it I thought, hey why not have
some fun at the same time. So now I got St205 brakes and a s54-06d gearbox waiting for installation too. It´s making 188 hp on 95 octane (we have 98 in this
country) with a decat and KN panel filter + an alu lightweight crankpulley.

I ´ve done a lot of research on this engine and I think I have a pretty good Picture of what I want. I´m going for re-shaped cams, a good maschinist shop will make
them into 264*. I´m going to up the compression by shaving off the head, install a Fidanza flywheel, make a cai into the oe box along with supporting mods like
Magnecor leads a wideband lambda sensor and perhaps an adjustable fpr or high capacity fuelpump. No piggyback or standalone at the moment, but it is on the list for future mods.
My thoughts are:

1. how much can I shave off the head? I once read somewhere (can´t find it anymore) that 1mm is ok. My concerns here are mainly detonation,
but also piston/valve contact (but I don´t think so as this engine is a non interference engine), and cambelt slack.

2. will the oe green injectors be able to deliver enough fuel? I don´t know how much they are rated at.

Thank you for reading

[TARManiAC]

Yearh thanks for the good info on fpr´s Rusty. Sorry but I don´t know why horsepower is published the way it is here in europe. Those were the numbers I got from a free rolling-road day a couple of years ago. So why bother fixing a good strong engine you ask. Well, because it´s old, has nearly 280.000 km´s under the belt, I want to use it as a daily driver for many years to come, and the most important reason: I might just take up my racing career again. It needs at least new gaskets, seals and cambelt. Then I decided on a lightweight flywheel and I thought, heck why not take the engine out and get rid of all the rust and gunk and give it a paint job. Then I found out I might as well stick some new bearings and rings in there. It´s evolving ;-)

The alu crank pulley has been there for more than 40.000 km´s so it´s staying

As for the camshafts, I just asked a renowned Company if they could grind them to 264* since I´ve heard these would still be ok for daily driving. No serious porting apart from the intake and exhaust ports. no valvejob apart from cleaning and adjusting. Oe exhaustmanifold. No crank balancing. I know somekind of uprated ecu gives so much more (had them in my former race-engines), but for the moment I´m going with a wideband and a knock-link for safe tuning. Power? let´s see, but I wouldn´t be surprised to see 200+. Compression? you tell me:-) but I think something like 11,5:1 is ok. But still the big question is:

How much to mill off?

NO you can NOT just mill away, very bad advise there.

btw, is it possiblel to hook up a wideband and a knock-link to the existing wiring loom, so I don´t need to install extra sensors?

This post has been edited by TARManiAC: Apr 27, 2015 - 9:43 AM