RIGHT THEN!... 'BEST' TURBO FOR EASY 350/350 ???
22 March 2009, 11:29 PM
#1
RIGHT THEN!... 'BEST' TURBO FOR EASY 350/350 ???
As per title...
What I mean is, what is the best known turbo out there that will easily get to 350/350 with a FMIC (+ cone IK), 550s, 3" decat/system, Walbro?
...BUT it must be the lowest possible spooling turbo available for the required 350/350 (as low as 2,500 or less! would be fab; but 3,000 would be okay, if not) ... AND be able to maintain that max boost (or certainly as much of it as poss) all the way to a 7,100rpm red line...
Thanks in advance.
What I mean is, what is the best known turbo out there that will easily get to 350/350 with a FMIC (+ cone IK), 550s, 3" decat/system, Walbro?
...BUT it must be the lowest possible spooling turbo available for the required 350/350 (as low as 2,500 or less! would be fab; but 3,000 would be okay, if not) ... AND be able to maintain that max boost (or certainly as much of it as poss) all the way to a 7,100rpm red line...
Thanks in advance.
22 March 2009, 11:41 PM
#2
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Well my VF34 has got there Joz, all be it by just 3 bhp, spool up is great too, now whether that,s near the limit of this turbo then i,d guess yes, but it makes a great road car fella...with the mods you,ve mentioned too....
oh and Bob Rawles mapping...
oh and Bob Rawles mapping...
23 March 2009, 12:23 AM
#3
Cheers Pete. The reason for the 350/350 'target' is that's what Paul would be happy to run the Zen-rebuilt motor at (with forged STi 3/4 pistons/Sti 9 rods/ACL bearings), and it's a ballpark figure I'd be well happy with on the road.
Yes, the VF34 (roller bearing variant of the 35, yes?) or, indeed, the 35 do do those numbers at low spool. Thing is, are they appreciably better than my OEM TD05H 16g? I'm guessing, though, that the 05 is marginal in its ability to getting to 350/350? (as you can see I want the most flexible turbo for 350/350 potential). What do you reckon Pete?
Any other recommendations from anyone else?
Yes, the VF34 (roller bearing variant of the 35, yes?) or, indeed, the 35 do do those numbers at low spool. Thing is, are they appreciably better than my OEM TD05H 16g? I'm guessing, though, that the 05 is marginal in its ability to getting to 350/350? (as you can see I want the most flexible turbo for 350/350 potential). What do you reckon Pete?
Any other recommendations from anyone else?
Last edited by joz8968; 23 March 2009 at 01:11 AM.
23 March 2009, 11:01 AM
#6
Cheers Paul.
That's music to my ears, as I was liking what I was hearing about the MD380 on another thread, but didn't realise it would be low spooling 'enough' for only a 350/350 output, if you see what I mean - I thought there could be lower spooling ones.
Anyone know typical spool up points of both the 18g and 380? Also, I'm under the impression that, out of the two, the 380 has higher peak power potential (not that I require that) - is this true?
That's music to my ears, as I was liking what I was hearing about the MD380 on another thread, but didn't realise it would be low spooling 'enough' for only a 350/350 output, if you see what I mean - I thought there could be lower spooling ones.
Anyone know typical spool up points of both the 18g and 380? Also, I'm under the impression that, out of the two, the 380 has higher peak power potential (not that I require that) - is this true?
Last edited by joz8968; 23 March 2009 at 02:42 PM.
23 March 2009, 02:34 PM
#7
...Also, anyone know the characteristics of this turbo? 
:-
SUBARU IMPREZA STI IHI MD304 TURBO on eBay, also, Subaru, Car Parts, Cars, Parts Vehicles (end time 30-Mar-09 11:36:30 BST)
...Looks like it's good for 350+, but anyone know the max-boost spool-up point?
:-SUBARU IMPREZA STI IHI MD304 TURBO on eBay, also, Subaru, Car Parts, Cars, Parts Vehicles (end time 30-Mar-09 11:36:30 BST)
...Looks like it's good for 350+, but anyone know the max-boost spool-up point?
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23 March 2009, 03:42 PM
#8
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I reckon if spool is your priority and you wouldn't feel too cheated if you came up a few BHP short, the VF 35 would be good (quickest spooling next to the TD04 hybrids AFAIK). Mine makes 338 and 343ft lbs. Will probably be good for a few more ponies on an STI.
If you MUST have 350 then TD0518G would do it and then some without destroying spool up times. Best speak to the mapper really,as different turbos work better with different mods.
Ns04
If you MUST have 350 then TD0518G would do it and then some without destroying spool up times. Best speak to the mapper really,as different turbos work better with different mods.
Ns04
23 March 2009, 03:59 PM
#10
Scooby Regular
Joz,
You,re a BHP Chaser aren,t you??
Get yourself a VF34 mate, you,ll love it, come to the Bassets Pole meet this sunday and you can have a drive of mine fella...
You,re a BHP Chaser aren,t you??
Get yourself a VF34 mate, you,ll love it, come to the Bassets Pole meet this sunday and you can have a drive of mine fella...
23 March 2009, 04:10 PM
#11
... But Paul says I'm not allowed any 'creep'! - motor is rated at 350/350 and not really anymore...Is that some kind of dubious club for fruity dogs...
[well, most strip clubs are, aren't they?! ]
Last edited by joz8968; 23 March 2009 at 04:15 PM.
24 March 2009, 10:35 PM
#12
Seriously, are there any specialists/mappers, etc. out there that has 1st hand experience of all 4 turbos: VF34, VF35, 18g and 380?
Can they give me their impartial advice on what they reckon to be the best 350/350 potential turbo out of the 4, with respect to lowest spool and maximum held boost to the redline... and general everday flexability/drivability i.e. "niceness" lol?
Some graphs would be nice too, if anyone has any...
Cheers.
Can they give me their impartial advice on what they reckon to be the best 350/350 potential turbo out of the 4, with respect to lowest spool and maximum held boost to the redline... and general everday flexability/drivability i.e. "niceness" lol?
Some graphs would be nice too, if anyone has any...
Cheers.
Last edited by joz8968; 24 March 2009 at 10:37 PM.
24 March 2009, 10:54 PM
#14
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My STI managed 340 bhp on it's VF35. No headers or porting, just FMIC and a TSL catted exhaust. Back in 2007 it felt ballistic....
HTH
dunx
HTH
dunx
24 March 2009, 11:06 PM
#15
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Personally I would pick up a VF35 for ~£250, run 1.6bar mid tapering to 1.3 or less at 7k (depending on your induction set up you may suffer some surge though?).
Lots of fun for very little money
Jase.
Lots of fun for very little money
Jase.
24 March 2009, 11:07 PM
#16
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Erm well I just got back from Paul mapping it up for me over the weekend - forged bottom with STi4 heads, all supporting mods, FMIC and TD05-16G = 346bhp and 308 lf/ft torque. Close enough for you?
25 March 2009, 12:01 AM
#18
Thanks for all the suggestions guys - that's very constructive and interesting input and, indeed, food for thought...
Yes s c o o b y, I'm actually halfway through running in this new Zen STi-internal'd engine but I never had any issues with the way the old engine ran i.e. its performance through all the gears at all rpm - smooth as silk with NO rough running at all. This new engine feels just as good (although obviously I haven't ventured past 3.5k-4.5k rpm yet - just about to finish the 1st 500m). I really like the car as it is at about 280bhp and similar torque... But... as dunx eludes to in his post, we eventually get used to it don't we?
I'm sure a flexibly-delivered c.350/350 in a light c.1220kg Classic is going to feel awesome on the road!
Silent has inspired me to just keep the OEM TD05H 16g for the time being and see what I end up making on that (when I get the FMIC/550s/remap). If I'm not happy with the figures and/or the on-road performance, then I'll probably do as Jase/dunx/Ns04 say, and save a few bob by getting a decent 2nd hand VF35 (may as well bung on some of harvey's ported headers and up-pipe at this juncture too). I'm sure this latter option - if not the former - would defo get me the car I desire... at the cheapest possible cost! (always important, that last bit
).
Yes s c o o b y, I'm actually halfway through running in this new Zen STi-internal'd engine but I never had any issues with the way the old engine ran i.e. its performance through all the gears at all rpm - smooth as silk with NO rough running at all. This new engine feels just as good (although obviously I haven't ventured past 3.5k-4.5k rpm yet - just about to finish the 1st 500m). I really like the car as it is at about 280bhp and similar torque... But... as dunx eludes to in his post, we eventually get used to it don't we?
I'm sure a flexibly-delivered c.350/350 in a light c.1220kg Classic is going to feel awesome on the road! Silent has inspired me to just keep the OEM TD05H 16g for the time being and see what I end up making on that (when I get the FMIC/550s/remap). If I'm not happy with the figures and/or the on-road performance, then I'll probably do as Jase/dunx/Ns04 say, and save a few bob by getting a decent 2nd hand VF35 (may as well bung on some of harvey's ported headers and up-pipe at this juncture too). I'm sure this latter option - if not the former - would defo get me the car I desire... at the cheapest possible cost! (always important, that last bit
).
Last edited by joz8968; 25 March 2009 at 12:19 AM.
25 March 2009, 08:48 PM
#19
Scooby Regular
Well I did have a VF35 before and it was a nice turbo although I had a lot of surge problems with it. Felt similar to the TD04 that was on there at first, just 'more of everything' if you get what I mean. The TD05 definitely felt like a bigger turbo from the start but saying that, with Harvey's headers and up-pipe plus the build as a whole, it hit 1 bar at around 2800rpm last time I checked and full boost at 3400rpm. Thing is with the 16g is it doesn't tail off like the TD04 or the VF35 did, it keeps on pulling well up past 7000rpm.
26 March 2009, 11:21 AM
#21
Well I did have a VF35 before and it was a nice turbo although I had a lot of surge problems with it. Felt similar to the TD04 that was on there at first, just 'more of everything' if you get what I mean. The TD05 definitely felt like a bigger turbo from the start but saying that, with Harvey's headers and up-pipe plus the build as a whole, it hit 1 bar at around 2800rpm last time I checked and full boost at 3400rpm. Thing is with the 16g is it doesn't tail off like the... VF35 did, it keeps on pulling well up past 7000rpm.
I'm liking what's highlighted in blue - that's pretty flexible!
In red though, I didn't necessarily realise that, although I had did have an incling - seems a step back.
There's NO WAY! I want to lose even the faintest rush to the red line 
, so don't think I'll do the VF35 route - bound to opt for my TD05H 16g, or a 18g!, then...Would it be worthwhile getting my TD05H 16g ported by Zen (like Sam there has), plus harvey's headers/up-pipe? I think this combo could work very well(?)
26 March 2009, 11:24 AM
#22
Based on what Silent has posted, I'd go with the 18g. See my responses in post # 21, above...
Last edited by joz8968; 26 March 2009 at 11:33 AM.
26 March 2009, 06:58 PM
#23
Scooby Regular
Oh it does Joz believe me..
my mate has a Evo 8 running a proven 410bhp/378ft/lb and he struggles to keep with me to about 120mph and that,s NO bollocks either, mind you once i hit about 130 cus of my gearing he,s past me, BUT that doesn,t bother me, i,m not into top speeds, all i know is a GENUINE 350/350 in a classic is a hoot of a raod car..
Mine did a 12.3 quarter @ 110mph when it was 20odd bhp down on what it is now, not bad that really is it??
26 March 2009, 07:22 PM
#25
If you already have a 16g, don't go changing it to a VF34/35.
16g is VERY capable. Speak to Paul about supporting mods. 340/340 here, although it has made a touch over 350 on lesser dynos.
Put in context, a well setup 16g has the ability to blow a 996 (911) Manual Turbo or GT3 into the weeds upto silly speeds.
16g is VERY capable. Speak to Paul about supporting mods. 340/340 here, although it has made a touch over 350 on lesser dynos.
Put in context, a well setup 16g has the ability to blow a 996 (911) Manual Turbo or GT3 into the weeds upto silly speeds.
26 March 2009, 07:37 PM
#27
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Great turbo the TD05's, very strong and give a good kick up the jam role when they come on boost
26 March 2009, 07:44 PM
#28
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27 March 2009, 12:11 AM
#29
Thanks again people.
Blimey, you can see why there are so many threads on turbo choice (lots currently running too!) - so many opinions, so many choices!
I do, however, appreciate that people can only comment on what they have experienced.
Because I'm unsure about the 'cheap' VF34/35 route, I think I'll follow BOB'5 advice and still keep with the TD05H 16g for the time being (see my other post # 21) and see how I get on. That way, if I don't change turbos, then I can't **** myself off - because I'll never have a comparison or, indeed, a Placebo!... Sometimes, deliberate ignorance can help retain (relative) 'sanity'...
Blimey, you can see why there are so many threads on turbo choice (lots currently running too!) - so many opinions, so many choices!
I do, however, appreciate that people can only comment on what they have experienced. Because I'm unsure about the 'cheap' VF34/35 route, I think I'll follow BOB'5 advice and still keep with the TD05H 16g for the time being (see my other post # 21) and see how I get on. That way, if I don't change turbos, then I can't **** myself off - because I'll never have a comparison or, indeed, a Placebo!...
Sometimes, deliberate ignorance can help retain (relative) 'sanity'...
27 March 2009, 12:44 AM
#30
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Although mine's a New-Age STI, it ran for the limiter like a crazy thing, the only reason I didn't was that changing up at 6500 rpm dropped you slap bang into the fattest part of the torque curve, i.e. was quicker ! Six gears also kept it on the boil !
HTH
dunx
HTH
dunx