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Best single turbo for spool/power compromise


Jamesy

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I would look at a BW 88/75 or 91/79.

 

They are half the price of a PTE units and do not require water lines as they are journal bearing, FYI BW are also releasing a range of Billet units ;)

 

 

Heard about these and apprently BW dropped them as they weren't all that according to Geoff at full race.

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I would look at a BW 88/75 or 91/79.

 

)

 

thanx Wez - paul said the 88/75 was a bit smaller than the 91/79 but im not sure on the full spec.

 

so far the S366 is most appealing with 650-700hp and quick (ish) spool time ....

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I've got the S300 88/75 on my car, which Lee has right now... It's around the same size as a 4088, and Whifbitz saw 540bhp with 540lb/ft at 1.6 bar with a basic tune.

 

I'm using a 1.01AR, which might be a bit laggy, but this turbo can support plenty more than I'm going to throw at it. Plus, as mentioned, the billet wheels look interesting :D

 

The main draw for me was the torque figure, which I believe is down to the extended tip technology on the new BW turbos.

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On my BW 88/75, IIRC the torque figure was 570ftlbs. Its only set to 1.1bar at the moment as I had some dodgy coil packs/clips. Will be going to get the map finished as soon as i can.

 

:) wow, I hadn't realised yours made that sort of twist.

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Cheere guys. Jamie is keeping his 67 as a spare now.

 

I like the idea of the fast spooling gt35r but i know i'll want more power and happy to lose a bit of spool to get there.

 

Just thinking before the turbo goes on in the coming weeks its the best time to see whats my options. Otherwise its more cost and hassle for Lee to change later plus whenever he gets time for it as hes a busy boy!!

 

The BW range seem good but Dusty told me last night there are sooo many options so trying to gauge some experience from u guys!!!

A GT35R would be much more powerful than BPU, have you been in any single cars?

Don't be fooled by all the numbers a GT35R can easily make 550BHP, and with high boost/meth mix probably over 600. :)

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On my BW 88/75, IIRC the torque figure was 570ftlbs. Its only set to 1.1bar at the moment as I had some dodgy coil packs/clips. Will be going to get the map finished as soon as i can.

 

Wow Steve : 570 ftlbs :blink:

 

At what boost was that??

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Is it worth us to start a turbo registry? I mean I know it's going to be a little subjective depending on engine mods, but at least it will start to point people in the right direction?

I was thinking it could be a case of listing:-

Manufacturer

Designation

Compressor AR

Exhaust AR

RPM to achieve 1 bar WOT in 4th (If it's 4th then it should tally up with the dyno plots)

BHP achieved

 

As I say, obviously the spool and final HP will be determined somewhat by engine mods, but if we're sensible with it (ie if you add 100 shot of nos then obviously it's going to skew the results) then I think it would be a useful aid to those of us who struggle to keep up with what all the different manufacturers different turbo designations mean relative to the things that are important to us (ie spool and achievable BHP).

 

Anyone think it's a good idea? If not back to the thread.....

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:) wow, I hadn't realised yours made that sort of twist.

 

Unfortunately the higher boost/revs showed the weekness in my coil packs/clips. So have now got them sorted and will hopefully get the map finished with more boost :)

 

I think that was an attempted 1.3bar.

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Unfortunately the higher boost/revs showed the weekness in my coil packs/clips. So have now got them sorted and will hopefully get the map finished with more boost :)

 

I think that was an attempted 1.3bar.

 

We're going to need shares in Toyo Tyres mate. :D

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With regards to a stock engine if you want 650, maybe 700bhp id look at the BW 88-75 steve runs, makes good torque and power by the look of it and they dont cost the earth.

 

Perfect turbo for a stock engine is the billet 6765 imo, ive not seen anything else the same size come close yet for power and spool, as said they do cost a fair amount and reliability is questionable, mine failed although i did give it a lot of abuse, 2.3bar and lots of 200mph pulls, its at AET now being rebuilt.

 

 

 

 

 

Is it worth us to start a turbo registry? I mean I know it's going to be a little subjective depending on engine mods, but at least it will start to point people in the right direction?

I was thinking it could be a case of listing:-

Manufacturer

Designation

Compressor AR

Exhaust AR

RPM to achieve 1 bar WOT in 4th (If it's 4th then it should tally up with the dyno plots)BHP achieved

 

As I say, obviously the spool and final HP will be determined somewhat by engine mods, but if we're sensible with it (ie if you add 100 shot of nos then obviously it's going to skew the results) then I think it would be a useful aid to those of us who struggle to keep up with what all the different manufacturers different turbo designations mean relative to the things that are important to us (ie spool and achievable BHP).

 

Anyone think it's a good idea? If not back to the thread.....

 

 

 

Good idea, spool time on the dyno wont match the logs you get on the street though, the dyno never loads them up hard enough.

A street log in 4th will make boost quicker than a dyno log in 4th imo.

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With regards to a stock engine if you want 650, maybe 700bhp id look at the BW 88-75 steve runs, makes good torque and power by the look of it and they dont cost the earth.

 

Perfect turbo for a stock engine is the billet 6765 imo, ive not seen anything else the same size come close yet for power and spool, as said they do cost a fair amount and reliability is questionable, mine failed although i did give it a lot of abuse, 2.3bar and lots of 200mph pulls, its at AET now being rebuilt.

 

Good idea, spool time on the dyno wont match the logs you get on the street though, the dyno never loads them up hard enough.

A street log in 4th will make boost quicker than a dyno log in 4th imo.

Yotally agree, my dyno runs showed full boost at over 4k yet I see it at 3.5k on the street

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The reason the dyno doesn't load the motor as hard is safety, less load equals less heat but the downside is that turbo motors don't spool as quick.

 

Great idea on the turbo table and would be great for comparisons.

 

 

The BW units are known as transmission killers due to the amount of torque they produce, Steve`s torque figure is crazy for the boost :thumbs:

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Good idea, spool time on the dyno wont match the logs you get on the street though, the dyno never loads them up hard enough.A street log in 4th will make boost quicker than a dyno log in 4th imo.

 

Unless it's a Mustang Dyno ;). Anyone Know where the Dyno form Race Shack went?, by far the best dyno in the worst Environment?

 

Lyndon.

Edited by Nodalmighty (see edit history)
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Thanx for all the advice guys.

 

Paul told me earlier the 88/75 is smaller than the 91/79 so not sure how thats making 700ish bhp. The 91/79 seems to produce 610-650bhp.

 

Went to see Lee today and saw gaz's bw300 unit which looks huge.

 

My ideal would be the billet 67.

 

After that something from BW producing circa 700hp, along the lines of the s366 with the larger .91ar.

 

Going to do some digging with AET for more info on the right unit.

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Is it worth us to start a turbo registry? I mean I know it's going to be a little subjective depending on engine mods, but at least it will start to point people in the right direction?

I was thinking it could be a case of listing:-

Manufacturer

Designation

Compressor AR

Exhaust AR

RPM to achieve 1 bar WOT in 4th (If it's 4th then it should tally up with the dyno plots)

BHP achieved

 

As I say, obviously the spool and final HP will be determined somewhat by engine mods, but if we're sensible with it (ie if you add 100 shot of nos then obviously it's going to skew the results) then I think it would be a useful aid to those of us who struggle to keep up with what all the different manufacturers different turbo designations mean relative to the things that are important to us (ie spool and achievable BHP).

 

Anyone think it's a good idea? If not back to the thread.....

 

this a fantastic idea as there are so many makes sizes numbers attached to different turbos twin scroll v band t4/t6 water cooled, air cooled ,billet, journal ball bearing, cant make head nor tail of it. bpu is fairly straight foward and good write ups.

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How about :-

 

Manufacturer

Designation

Compressor AR

Exhaust AR

RPM to achieve 1 bar WOT in 4th

Peak BHP @ Boost

Peak Torque @ Boost

Notes (for info including engine mods like cams etc)

 

Sounds like a good idea, for the 1 bar in 4th gear test are you talking about people just watching the rev counter and boost gauge on a run on the street? i cant lower my boost to 1 bar but i can get a rough idea.

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Could we incorporate into the ECU registry, most of the information is there already and it would be good to keep all data together in one place?

 

It might also be an idea to do as a spread sheet attachment as it'll be a lot easier to format/update

Edited by Nic (see edit history)
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