What Turbo's are you guys running then on the 2.1 Stroker Forged engines

What power @ What Bar of boost are you getting?

 

Non billet MD321V
495bhp/410 ft lb @1.7bar

 

MDX321T V-Power 452bhp/440lb ft 1.7bar,V-power and 20% meth 490bhp/480lb-ft 1.7bar


Jura

 

S206 2.7bar 517hp

 

A friend is running a billet GT30R @ 2.1 bar on 20% meth it made 614bhp and 467lb/ft

 

Good power, but how come the torque is so low? Do all the big power scoobs have torque like that?

 

Its very top end due to the cams and the 0.82 exhaust housing. Could easily bring up the mid range with milder cams and smaller exhaust housing. All depends what you want in a car....

 

Ahh, fair enough...

 

same with mine - fairly lairy cams

 

2.7 bar!! You're joking right....I hope that was a typo??

 

Hi I`m running a s206 non billet with meth and jun 272 cams at 1.7 bar 508/470

 

Precision billet 5831, will hope to see mid 500 when mapped

Wiley

 

Also had the MD321T and MD321V which both worked very well.

Wiley

 

+1

Should be 1,517 bhp at that level.

 

Gaz and lucky, no it definitely was not a typo I run 2.7 bar.

 

And only get 517 out of a turbo that produces 500+ at 1.7 bar?

Can I ask why you are running an extra bar of boost for the sake of 15bhp??

 

Because my set up requires an extra bar of boost for the drag map. Its all about the way it builds boost, I run 1.8 bar for the track map, and 1.5bar for the road map.

Everyone is all about the headline power figures here. I want a seriously quick car, and by running the extra boost it comes in faster and harder. On a 1/4 mile drag you don't have a long time to build boost, so by running more boost I make the power figures but faster, and it gives me better times. I'm not far from a 10second 1/4 mile time with just 500hp. So I'd say it works fairly well

Unfortunately everyone seems blinkered in their way of tuning etc on here. The car is set up the way it is for very specific reasons and it is done very differently to 99.9% of the cars on herethe result is it is absolutely savage in its power delivery and seriously quick.

This isn't some noddy car, it has had years of development and testing and is getting quicker all the time, and I enjoy it even more because it breaks convention and sticks two fingers up at "normal"

 

Iv just been looking at engines that can hold 5bar of boost with the right fuel and setup but there not road car at all lol,,, 2.7 sounds fun though and my next build will be more than capable of this aswell :notworth

Currently 2.1 stroker is running 450bhp at 1.6bar ,,rotated gt30 none billet

 

2.7bar is never used on road lol It is just too savage, the way it buzzes through the gears would make anyone think it had a lot more power than it does.

I tried it once on the m5 at exeter slowed to 30mph, flicked the switch and gave it hell, it sat back on its haunches, then launched forwards and lit up all 4 wheels lol... Not suitable for road use :L

 

2.7bar is never used on road lol It is just too savage, the way it buzzes through the gears would make anyone think it had a lot more power than it does.

I tried it once on the m5 at exeter slowed to 30mph, flicked the switch and gave it hell, it sat back on its haunches, then launched forwards and lit up all 4 wheels lol... Not suitable for road use :L

 

Ahh...ok then if its for drag use, For a minute you were using 2.7 bar for driving/handling

 

What was the point of going rotated Domino46 if you could have made 450, up to 500 with a bolt on turbo.
Thought the GT30s should see 550-600bhp

Wiley

 

Nice turn of phrase that !

 

Depends on spec of turbo I suppose !! Could be a 3071 !!

Let us know what you make on that turbo Wiley !!

 

Really?

I used 601 bhp and 565 ft/lbs on the road on a daily basis without issue.

I managed a 10.9 with 520 bhp on ****ty Cheap chinese tyres (Triangle Talons)

I'd suggest it was either wet and the road was greasy or you're talking pish

 

Turbos have moved on abit since I first had my rotated kit many years ago and iv got the baby gt30 ,,its got more but my standard WRX heads prob havnt lol,,,,plus a rotated turbo drives much much better than a standard mount one of the same power so its money well spent in my view as its not always about the numbers but how it gets there aswell

 

We've tried a fair few combos over the years on 2.1 engines from the lowly TD04 right up to and beyond Billet 35s.
It's hard to beat the savage hold you in the seat to the redline nature of the Billet 35, but for those looking for a bolt on turbo there are many options.
For high 300s look no further than a Billet 20G, early 400s the SC42 works brilliantly, mid 400s the S206B (Our own offering) or the SC46 will see you right, if you want 500+ then it's rotated all the way for me starting with the Billet 30.

 

Martyn.. I was looking at a SC46 with one of ur 2.1 stroker engines... but am liking the sound of the S206B, do you have any more info on it at all? Cheers

 

For a all round package you'll struggle to beat a billet 30 (rotated) on a 2.1 with AVCS heads

 

Mapping an old non Billet unit as we speak on a 2.1 we built 5 yrs ago, will post graphs later but 484bhp and 455lbft @ 1.8 bar on Vpower

20% meth map now completed too, 532bhp and 481lbft @ with a little spike to 1.9 in the midrange.
Graph to follow if anyone's interested.