Turbo options

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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mavada
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Re: Turbo options

Post by mavada » Mon Dec 16, 2013 10:09 pm

Doubt it makes 600+ hp, but its probably going towards it...
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Re: Turbo options

Post by Shoppinit » Mon Dec 16, 2013 10:15 pm

So the gumpert apollos that are making 800+ with the same block, what turbos are they running I wonder.
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Re: Turbo options

Post by Weiß-sechs » Mon Dec 16, 2013 10:17 pm

mavada wrote:Doubt it makes 600+ hp, but its probably going towards it...
That's the baby... :boots:

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Re: Turbo options

Post by Weiß-sechs » Mon Dec 16, 2013 10:29 pm

grizz wrote:You don't need to pull your engine to change the water/oil cooler . and tbh £500 for a pair of hybrid turbos is ubba cheap .... In fact far too cheap
Hex heads weren't great so couldn't get good enough purchase plus I've decided the time is right after 120K+ miles and some fairly loud whistling noises for some turbo attention; don't fancy the same catastrophic failure as chunky has described earlier.....

Sorry for my crud post but I didn't mean that the turbos were costing £500 (not going anywhere near those Oriental crackers) but was asking the question as to whether hybrids were worth the extra over standard spec.

What you reckon?

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Re: Turbo options

Post by ahoooga » Mon Dec 16, 2013 10:33 pm

Looking at that .gif that Mav posted, it seems the answer to speed is............... no fog lights :bigblink:

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Re: Turbo options

Post by gingertoss » Tue Dec 17, 2013 12:09 am

Shoppinit wrote:So the gumpert apollos that are making 800+ with the same block, what turbos are they running I wonder.
Gt30s? Isn't that what is on Bams manual?
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Re: Turbo options

Post by Nobby » Tue Dec 17, 2013 12:40 am

The apollo uses KKK K26 turbos
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Re: Turbo options

Post by S4Player » Tue Dec 17, 2013 1:36 am

gingertoss wrote:
Shoppinit wrote:So the gumpert apollos that are making 800+ with the same block, what turbos are they running I wonder.
Gt30s? Isn't that what is on Bams manual?
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Re: Turbo options

Post by bam_bam » Tue Dec 17, 2013 8:57 am

It's a circular argument regarding power vs gearbox but JC pretty much nailed it, except, it's the hotside that's restrictive to 600+ (if you're still on log-type manifolds, then it's those that are the bottle-neck - ask Panda).
The problem is all of the hybrid snail supporting mods such as comp lowering, enlarged intake, extra cooling... it all adds up very quickly. And for what? An extra 50HP to your headline, later spool and a couple of Nm over a stage 2? It's the same 0-60 and a bit quicker to 100 so it really is chasing numbers, all the while you're getting walked by a C6 with a stage 1 and a stage 2 is jogging down the road, it's all relative. The sweet spot is 550.

The motor is good for 800+ on standard internals (needs head work, tubulars, oil cooler, larger inters, gaskets and GT30s) but it'll need a manual for those 30s and it's hardly a linear power delivery, it's a truly mental top-end. It scrambles the mind at how everything erupts above 5000rpm. The trade off is it stops being the perfect town car and it becomes a lag monster, which is kind of at odds to what the car 'is', I'm not saying it isn't fun, it's just that you only tend to 'have fun' for very limited times during ownership. IMO you should build a car for the capacity you mostly use it for, not the ten tenths stuff... unless you're always on it and tracking.
Hard not to get carried away though...
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Re: Turbo options

Post by Weiß-sechs » Wed Dec 18, 2013 3:00 pm

bam_bam wrote:It's a circular argument regarding power vs gearbox but JC pretty much nailed it, except, it's the hotside that's restrictive to 600+ (if you're still on log-type manifolds, then it's those that are the bottle-neck - ask Panda).
The problem is all of the hybrid snail supporting mods such as comp lowering, enlarged intake, extra cooling... it all adds up very quickly. And for what? An extra 50HP to your headline, later spool and a couple of Nm over a stage 2? It's the same 0-60 and a bit quicker to 100 so it really is chasing numbers, all the while you're getting walked by a C6 with a stage 1 and a stage 2 is jogging down the road, it's all relative. The sweet spot is 550.

The motor is good for 800+ on standard internals (needs head work, tubulars, oil cooler, larger inters, gaskets and GT30s) but it'll need a manual for those 30s and it's hardly a linear power delivery, it's a truly mental top-end. It scrambles the mind at how everything erupts above 5000rpm. The trade off is it stops being the perfect town car and it becomes a lag monster, which is kind of at odds to what the car 'is', I'm not saying it isn't fun, it's just that you only tend to 'have fun' for very limited times during ownership. IMO you should build a car for the capacity you mostly use it for, not the ten tenths stuff... unless you're always on it and tracking.
Hard not to get carried away though...
Excellent info Mr Bam & all other contributers :thumbs:

Hear what you're saying about chasing big numbers; not what I'm after, I'd rather keep the driveability as you say, leave the big number game to the dyno day boys...

So I reckon I'll go down the hybrid route on standard manifolds (unless someone can give us the heads up on where I can find some tubulars with a K04 flange?) and get the pre cats gutted while the engine's out.

As you say it's hard not to get carried away with the mods and good to knw the bottom end is good for 800 bhp :bigblink: but (as I'm sure you know all to well) the costs can build very quickly, a pair of GT30's on tubulars are looking like £6k+ :shock:

Cheers again for your input

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Re: Turbo options

Post by Shoppinit » Wed Dec 18, 2013 3:06 pm

I like the idea of you being a guinea pig for the hybrid turbos on standard mannies. :thumbs:

Who does 'em? Loba? Any one else?
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Re: Turbo options

Post by Weiß-sechs » Wed Dec 18, 2013 3:12 pm

Shoppinit wrote:I like the idea of you being a guinea pig for the hybrid turbos on standard mannies. :thumbs:

Who does 'em? Loba? Any one else?
Company called AET in Yorkshire, any feedback?

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Re: Turbo options

Post by Shoppinit » Wed Dec 18, 2013 3:17 pm

That's quick tricky to say in a Yorkshire accent.

A quick google suggests that they know their stuff.
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Re: Turbo options

Post by Daveperc » Wed Dec 18, 2013 3:19 pm

I'll go down the hybrid route on standard manifolds (unless someone can give us the heads up on where I can find some tubulars with a K04 flange?) and get the pre cats gutted while the engine's out.
I would suggest that you get the Miltek 3" DP's rather than decatting the existing pipes as you will find that even decatted the stock DP's constrict the flow, and it will be more significant with bigger snails.

Even on my Stage 2 (with stock turbo's) it's the DP's that are limiting the spool up and flow I'm told. 880 Nm was the max torque I can get at present but I suspect I would be pushing past 900 with 3" DP's, and with bigger turbo's then you'll get up to Amanda's 995...

All of which is great - but you will need the strengthened box of course!

Dave

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Re: Turbo options

Post by Weiß-sechs » Wed Dec 18, 2013 3:24 pm

Daveperc wrote:
I'll go down the hybrid route on standard manifolds (unless someone can give us the heads up on where I can find some tubulars with a K04 flange?) and get the pre cats gutted while the engine's out.
I would suggest that you get the Miltek 3" DP's rather than decatting the existing pipes as you will find that even decatted the stock DP's constrict the flow, and it will be more significant with bigger snails.

Even on my Stage 2 (with stock turbo's) it's the DP's that are limiting the spool up and flow I'm told. 880 Nm was the max torque I can get at present but I suspect I would be pushing past 900 with 3" DP's, and with bigger turbo's then you'll get up to Amanda's 995...

All of which is great - but you will need the strengthened box of course!

Dave
Where will it all end....... :drink:

Yes, definitely thinking of the Milltek dp's

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