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Calling the tuners!

1692 Views 42 Replies 7 Participants Last post by  corriedw
Hi guys, will all the tuners please report to my thread here incase they can give me some info. thanks :)

and not the software junkies! haha im talking old skool NA tuners, need advise that require the experience of hand on spanner instead of hand on keyboard guys haha
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Discussion Starter · #3 ·
hey lance haha i would have made it 3.8 if i could, but the only possible way to make it a 3.8 is by stroking it with the 3.6 bore, and to stroke it you must start fiddling with the twin phaser system, not something im really looking to do haha, sound like a moerse $$$ mission. the other route is to make it 4.0L, yes it is possible but then you need to bore out a lot of the block and the liners and put a nikesil coating in there and make up forged pistons and do serious mods to the squish on the head and have special head gaskets made and possibly need bigger injectors so thats also a no-no.

Dont expect miracle power gains like 300kw all of a sudden hey, i know how you software turbo okes think haha.

what power did rudi say his monstro kicks out last time by the way?
 

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Discussion Starter · #4 ·
what i do know is dawie is pulling out all the stops and is busy with a 116 body alfa with this motor in 3.85 form and all the other na tuning bells and whistles. now that will be a car of note! will love to see it in action! joh!
 

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Discussion Starter · #7 ·
i have already gone big bore, already have the 3.6 pistons in the block and all. unfortunately the 3.8 holden is not the same engine, that is the ecotec block, mine is the alloytec block.

but yes im bus assembling the motor at this stage and doing some proprietary tuning tricks to smooth it out perfectly. i have all the headgaskets and everything i need already :) im just working on ways at the moment to give the brera some revving spirit to bring back the 3.2 excitement factor. :thumbs:
 

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Discussion Starter · #8 ·
Unfortunately forced induction is not really a option lance, a supercharger conversion from a place of my choice would cost near 100 grand, autodelta refuses to send their kit over here, and also its very expensive.

Turbo is also out because there is almost no space in that engine bay for one, and also because the motor is transverse mounted its will be a near impossible mission to fit the turbo in a efficient place.

I know you are a turbo man and i respect that, hell i go ape on the throttle when im hearing dump noises haha BUT sweet NA motors is something i always loved, and yes i know a little 1750 like yours can even churn out more NM than a big 3.6 but thats missing the point, theres just that something, that build up to something great, that thunder sound building up, the power rising up, the big climb of the revcouter, it cannot be explained really to be honest.

drive something with a perfect NA engine in and you will most likely understand.

unfortunately prime examples of this are BMW's, more to the point the E46 M3 and the new V8 M3. And lets not forget the Busso.
 

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Discussion Starter · #10 ·

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Discussion Starter · #12 ·
yes the cams are in the works so no worrys there, the flywheel im just a bit scared of as its a dual mass, what is the cost of making a new steel one? and how much weight do you think is ideal to shave off?

the pistons i got are also lighter so that will definately help a bit.

i would love some throttle bodies and i know tony and rory make a epic set for my car but im too afraid to know the cost haha!

thanks for all the advise.
 

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Discussion Starter · #16 ·
ok many bases to cover all of a sudden haha!

Flywheel: ok if im not having the dual mass then where can someone make me a single mass flywheel then? or even better where can i buy one?

also, isnt the dual mass to dampen the vibrations or can the experienced say otherwise?

And, how much weight should i drop off the fly?

Knife edge: while i initially planned on this, im concerned about the oil distribution in the motor, remember the lobes are also there to pick oil up, and the alloytec motor is known to love oil everywhere or else things start to go wrong like stretched timing chains and bearings running a tad dry, the crank is also very expensivo so i dont want to stuff it up potentially. so unfortunately the knife edge is a no go from my side.

Plenum/throttles: i want to get into this maybe when the car is first running, maybe the performance increase will be enough to satisfy me, maybe not :)
 

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Discussion Starter · #18 ·
yes it had the oil squirters but that is just for the pistons to cool them down actually.

:cry: i want to dump the DMF but nobody told me how or with what to replace it yet?? :rolleyes::lol:
 

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Discussion Starter · #20 ·
indeed balance will have to be on the cards, im not looking at making a super light one i want the nice average. so is 4kgs the average then or is that too much for a city sleeker?
 

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Discussion Starter · #21 ·
did he get the steel one made or did he buy it off the shelf? if he had it made then where did he get it made?
 

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Discussion Starter · #25 ·
mmm so maybe i will be switching to SMF

just to be clear, i get a SMF and the balance the motor to work with the new fly right?
 

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Discussion Starter · #26 ·
Just to add, cc yourcombustion chambers and do a proper three angle valve and seat grind, blending the sharp edges in. This will improve flow no end. Remember, "power is made in the head" I can't remember who said that, but I believe it to be true.
already did the combustion chambers, they are sweet :thumbs:
 

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Discussion Starter · #27 ·
ok it seems the international folks are ignoring me haha so ill post on this thread from here on.

OK group huddle. Heres the plan, seeing as this SMF will turn out very expensive, i dont think im going down such a hardcore path, read up that the F40 gearbox almost always vibrates and chatters with a SMF so im not going to take that risk so once again i am forced to go where few men have gone before! i am going to lighten and balance my DMF!!

thats right so hold on to your hats because her comes some pics of my plans.

Firstly.

DMF top half

Here is a picture of the DMF from the top and an indication of how much i am going to take off from it:

http://i252.photobucket.com/albums/hh19/voldoverse/DSC00929.jpg
http://i252.photobucket.com/albums/hh19/voldoverse/DSC00933.jpg

Secondly.

DMF bottom half

Here are some pics indicating on how i plan on grinding the bottom half sides off the DMF

http://i252.photobucket.com/albums/hh19/voldoverse/DSC00931.jpg
http://i252.photobucket.com/albums/hh19/voldoverse/DSC00930.jpg

now i dont think this will shave off like 5kgs but im hoping to get close to atleast taking one kg off, in terms of spinning force 1kg can be a lot!

it probably wont make an outrageous difference but maybe give it just a liiitle bit more zing.

So what do you guys think? i know its not ideal but the VAG and BMW guys actually pull this move off so... its better than not doing anything to it at all.
 

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Discussion Starter · #29 ·
haha no its not my work its the engineering shops work lol hehe i love NA tuning $$$=mc-kw+blood_sweat_tears= 5KW

Maybe im going crazy hahahaha!
 

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Discussion Starter · #34 ·
Thanks corrie! I also thought the outside is a bigger gain place than the inside due to rotational forces, just needed someone to back me up on this hahaha.

I dont know if i should do the flywheel or clutch surface? The Q4 finds clutches very tasty especially on take off so i need all the clutch i can get. And also i thought usually when the flywheel surface gets weared you can throw it away? Well thats atleast what people say when.your clutch is shot and started eating the flywheel.

I took it to the engineering shop yesterday and the guy there also suggested taking it closer to the thread hole so i approved. He reckons doing those two sections i planned on will shave off about 1.5kgs but i dont think it will be that much, that or im seriously underestimating this "pot yster" weight haha
 

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Discussion Starter · #40 ·
Gertie can you measure the pcd of that bolt pattern? Would be interesting to know in comparison.

On the other hand does this mean i will have to buy a flywheel with clutch off a busso to actually work?
 
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