First OFFICIAL TWINCHARGED M20 BUILD

[Denny]

I see you have this kind of system:

Turbo feeds throttle body and after that it feeds the SC unit with pressurized air.

What kind of by pass valve arrangement do you have for the SC? Maybe something to do with the rapid response?

Is signal for the SC by pass coming from the intake?

On my car SC is at 0 pressure difference when not used anymore and the power it draws is minimized. It's basically a turbo engine at high rpm range and SC engine at lower rpm range.

On your system if the pressure difference between SC inlet+outlet is bigger it basically draws about 30-40hp at 10 psi from crank.

PS: Boost should be around 25 psi on my setup. Basically I run out of injectors, clutch and driveline.. I think it's still enough for a e30 cabriolet :D. 500Rwhp (700Nm) is ok and anything more is a +

18psi on stock bottom end is pretty good :), I had about 13-15psi on one of the first SC setups and after about 10k miles the cast pistons 2:nd ring lands were against oil rings. No bad cracks tho so would expect something similar miles before changing the pistons.

Next setup was with M52 pistons and it hold on ok with 17-18psi. After that the eaton was on it's limits and needed something more to the top rpm range. Then started the turbo/SC installation. M52 pistons are killer on price wise, hypereutectic. If knocking then they will blow ring lands easyer than cast pistons.

Also M50 135mm rods are a must with over 300rwhp. M20 stock rods will very likely bend.

We have other build for 1000hp+ levels. LS vortec engined e34 with 3.6L kenne bell SC unit and 8 laminova water cooler cores.

Can't wait dyno and vids of your car!

Thanks for the all the info :)

On my twincharged setup I use 2 valves one BOV before the throttle body to releive the boost on the turbo when I close the throttle signal comes from supercharger inlet. The other valve which is a BLV will monitor and make sure it boost only the amount I want in this case 17 PSI regardless of elevation, etc..

I believe the stock M20 rods can take at least 400HP we have a member here "kamotors" running over 440HP on his turbo stock rod M20 engine.

You guys are the kings for building monsters over in Finland!! I cant wait for YOUR videos.. twincharged 2.7L with 25 PSI LOL... hope you will have traction...which am sure you got that covered already.

[TheTacoMan]

Wheels size? any spacers?

Im running 17x9s Str wheels, they are multilug like xxr but I got them wicked cheap new. 300$ for all four wheels. Federal tires also run wide from what ive heard, should be good fro grip. With the tires being so cheap I cant wait to see how they handle.

http://www.str-racing.com/products-page/str-racing-wheels/str-514-hyper-silver/

[tinkwithanr]

Not 265's, not impressed.










:rofl: I kid I kid. Very excited to see some video of this beast. And on that front, you have a pm.

[TheTacoMan]

Not 265's, not impressed.










:rofl: I kid I kid. Very excited to see some video of this beast. And on that front, you have a pm.

Holy hell are those federal 265s?
Looks wide.


Oh and denny I am running fender flares with my setup. Not sure if you have some or are getting some

[Denny]

Im running 17x9s Str wheels, they are multilug like xxr but I got them wicked cheap new. 300$ for all four wheels. Federal tires also run wide from what ive heard, should be good fro grip. With the tires being so cheap I cant wait to see how they handle.

http://www.str-racing.com/products-p...-hyper-silver/

Not 265's, not impressed.










:rofl: I kid I kid. Very excited to see some video of this beast. And on that front, you have a pm.

Holy hell are those federal 265s?
Looks wide.


Oh and denny I am running fender flares with my setup. Not sure if you have some or are getting some

I'm seriously thinking that I need new wheels / tires if I want a chance at traction...my setup is just plain ridiculous compared to you guys. I need to make up my mind plus almost garantied I am going to need flares and I think I am going to cry like my 4 year old if I have to cut my mint rear rolled fenders... :( but I do love the look of the Kamators fenders mine would be painted to match the car...what to do...?!?

[kamotors]

drive around with big tires and no fender flares for a while and the tire rubbing will drive you crazy and motivate you to buy sweet flares:)

[tinkwithanr]

Holy hell are those federal 265s?
Looks wide.

Nope, 265/45/16 Kumho XS. Slight massaging of the fender is necessary.

I'm seriously thinking that I need new wheels / tires if I want a chance at traction...my setup is just plain ridiculous compared to you guys. I need to make up my mind plus almost garantied I am going to need flares and I think I am going to cry like my 4 year old if I have to cut my mint rear rolled fenders... :( but I do love the look of the Kamators fenders mine would be painted to match the car...what to do...?!?

All the cool people have flares. (See sig pic).

[Bullet Ride]

You guys are the kings for building monsters over in Finland!! I cant wait for YOUR videos.. twincharged 2.7L with 25 PSI LOL... hope you will have traction...which am sure you got that covered already.

Traction? pfffffttt ... having traction is no fun... this is what they think about traction up there in Viking land.... (note... there's some hot Swedish babes in bikinis in the video so potentially NSFW)

[Denny]

drive around with big tires and no fender flares for a while and the tire rubbing will drive you crazy and motivate you to buy sweet flares:)

I did ...before I got 225/50R16's in the back I had tried out 245/50R16 and they were big balloons..lol..rubbed most of the time and was very annoying and dangerous... but I realise that only by going to 17" will I have a good choice of tires. Right now its deciding on If I flare like all you cool guys ...or go for super crazy sticky 225/50R16 tires..?!?

Nope, 265/45/16 Kumho XS. Slight massaging of the fender is necessary.
All the cool people have flares. (See sig pic).

Yeap I see the thrend is Flare or go home... :( got to stop looking at your thread lol... I will go broke or divorced in no time.

Traction? pfffffttt ... having traction is no fun... this is what they think about traction up there in Viking land.... (note... there's some hot Swedish babes in bikinis in the video so potentially NSFW)

And then there is this good point right here screw traction .... :) I love the smell of burned tires but I love the swedish babes even more...:D we need more of this...I already forgot the flares..etc...

[mcr_driver]

Nice build!

Advance table looks quite safe/ok

The Finnish build can be found here (325i cabriolet, now 2.7L+M90+HX55):

http://www.btcf.fi/forum/showthread.php?p=3050434#post3050434

Only Finnish sorry :)

Some pics before adding the turbo can be found from www.1k.fi gallery.

I have Gates polycarbon cog belt setup (36mm) for the eaton drive.

I think I have a little different setup on boost piping. Have to go thru your thread.

I will try to post a pic of the engine room when I have more time.


quick specs of my engine:

Wiseco forged pistons
Diesel forged crank (2.7)
"eagle" rods
Dbilas cam
Shimmed double springs
Adjustable cam pulley
LS2 truck coils x6
Haltech E8
630cc injectors
Race bearings
Athena cooper ring head gasket (separate stainless fire ring)
12.9 head bolts/ARP rod bolts
double walbro 255lph pumps
...

I will answer more quostions on my own btcf thread(free forum,but needs registration) so we don't get carried away here away from the original subject that is about your build.

Edit: one pic from 2011 when making expansion tank, radiator and ABS-mounts etc. (A lot has been done since, must take some pics). Since then engine room has been painted and engine is back in. Final touches anymore to be done.(Painting valve cover, couple boost pipes etc.)

Holy Mother of god...Dem snails son...hnnnnnnnnnnngggggggggggg.......

[Denny]

Holy Mother of god...Dem snails son...hnnnnnnnnnnngggggggggggg.......

Yeap an HX55 it wont be pretty!!

Did some reading on the technologie of the "Athena cooper ring head gasket (separate stainless fire ring)" now thats a head gasket! when mine pops thats what is going in.

Still waiting for the BLV to arrive should be anytime now... so I can complete my setup and finally go have fun!!

[Peattie]

why no videos denny we're all waiting for them lol

[Denny]

why no videos denny we're all waiting for them lol

:D:D:D:D:D Joke.... the wait is lonnng but it will be the Video's of all Video's!!

[TheTacoMan]

VIIDDEEEEOOOO

[Denny]

heres one to hold you guys over!!