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Author Subject: How do they get 280bhp out gti6 engine?
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #26
you don't need an aftermarket crank for 280, but you do need to build it well.

280 from an XU is more like 10k+ ready to run, easily looking at 6k in parts on their own.

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Posted 28th Aug 2013 at 16:55
superchargedblack1997gti6

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Location: guildford

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Post #27
I thought that the original crank wasn't much good over 8k rpm for extended periods Mei? would have said for 280bhp would need to be revving to 8.5-9k ish?

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Posted 28th Aug 2013 at 17:01
jimmyhackers

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Location: birmingham

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Post #28
get some nos

cant really see any other way to get 280

except lying through your teeth

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Posted 28th Aug 2013 at 17:40
mr west

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Location: herts

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Post #29
How about one of those electric superchargers??LOL

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Posted 28th Aug 2013 at 17:46
blandy

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Location: Bucks

Registered: 25 Feb 2007

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Post #30
jimmyhackers wrote:
get some nos

cant really see any other way to get 280

except lying through your teeth


You can get what figures you like if your prepared to pay for it
Posted 28th Aug 2013 at 18:32
phillipm

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Location: Rotherham

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Post #31
jimmyhackers wrote:
get some nos

cant really see any other way to get 280

except lying through your teeth


280bhp is possible.
Your wallet would be a lot lighter too, even better power/weight.

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Posted 28th Aug 2013 at 18:35
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #32
Build it right and it wont need to go to 9.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 28th Aug 2013 at 18:40
phillipm

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Post #33
You wouldn't be far away, certainly be easier if you were pushing 9krpm.

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Posted 28th Aug 2013 at 18:49
welshpug!

Capt Pedantic

Location: Bigend, Wales.

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Post #34
Colins current sb engine is 272 @8k. But more importantly 191lbft @6500 and 150 at 3k

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Posted 28th Aug 2013 at 19:02
ryangti6

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Location: Pontypool

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Post #35
I've not seen curves etc but matts (pug1off) headline figures aren't that far off a maxi, how you can call that s**t I don't as to me that's quite impressive especially considering the amount of r+d that would of gone into building a maxi lump. Credit where credits due imo.

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Posted 28th Aug 2013 at 19:15
phillipm

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Post #36
welshpug! wrote:
Colins current sb engine is 272 @8k. But more importantly 191lbft @6500 and 150 at 3k


Yup, but it's dropping off at 8krpm, so to chase that extra bit of power you'd be making it a bit peaky without having some extra revs to go at.

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Posted 28th Aug 2013 at 19:25
blandy

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Post #37
Trouble is its a forum and people are biased either way but I totally agree at the end of the day I've seen cars running with pug1off engines and sandy brown engines and tbh they all look fantastic and no doubt they were all made for different purposes etc
Posted 28th Aug 2013 at 19:25
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #38
Supercharge to over 450bhp, no need to worry about revving over 8k then. No

Also no need to gas flow head, buy different cams etc.

You're all good to go. Thumbs up

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Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 28th Aug 2013 at 19:34
stan_306gti6 Forum Admin

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Post #39
atterz wrote:
Why is there a picture of a gimp in Stans avatar anybody? Im confused.


It's a pic of my bike with me standing next to it. Yes LOL

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Posted 28th Aug 2013 at 19:35
pete_rallye

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Post #40
stan_306gti6 wrote:
Supercharge to over 450bhp, no need to worry about revving over 8k then. No

Also no need to gas flow head, buy different cams etc.

You're all good to go. Thumbs up


Yawn. Play a different tune Stan! For people that want to actually compete in there cars NA is the only option unless you want to race in the open classes which have everything from radicals to 1000bhp evos in them, which make a 450bhp 306 look a bit silly.

On a circuit a high revving, high power engine is what you want, because you can learn what gear to be in and when and keep it on song all the time, so in that case a 300bhp 9k rpm engine is going to be quicker than a 8krpm 270bhp engine because you're using the power, not the torque. However to drive an engine like that does cost a lot in rebuilds, and its f**king tiring to boot, and if you drop off cam you can watch the entire field pass you whilst you change down a gear or wait for it to pull again. For less energetic drivers, and generally speaking rallying too, a torquey engine isn't going to be much slower but will be easier to drive as the revs can drop a bit and the engine will still pull, hence often someone will find they are quicker with a torquier (sp?) engine than with a high rpm engine as its easier for them to drive and keep in the power zone. That is my theory anyway, and I'm usually correct.

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Posted 28th Aug 2013 at 19:56
atterz

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Post #41
stan_306gti6 wrote:
atterz wrote:
Why is there a picture of a gimp in Stans avatar anybody? Im confused.


It's a pic of my bike with me standing next to it. Yes LOL


F*ck sorry mate!!! My screen is really dark on my laptop. Blush

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Posted 28th Aug 2013 at 19:58
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #42
atterz wrote:
stan_306gti6 wrote:
atterz wrote:
Why is there a picture of a gimp in Stans avatar anybody? Im confused.


It's a pic of my bike with me standing next to it. Yes LOL


F*ck sorry mate!!! My screen is really dark on my laptop. Blush


No problem mate! Laugh my ass off

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 28th Aug 2013 at 20:00
allanallen

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Post #43
superchargedblack1997gti6 wrote:
I thought that the original crank wasn't much good over 8k rpm for extended periods Mei? would have said for 280bhp would need to be revving to 8.5-9k ish?


Was this info from the same thread that said the limit for standard rods is 300bhp?? Razz LOL

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Posted 29th Aug 2013 at 04:56
superchargedblack1997gti6

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Post #44
allanallen wrote:
superchargedblack1997gti6 wrote:
I thought that the original crank wasn't much good over 8k rpm for extended periods Mei? would have said for 280bhp would need to be revving to 8.5-9k ish?


Was this info from the same thread that said the limit for standard rods is 300bhp?? Razz LOL


Nope but to be fair I'm talking about for track use on occasional use in the supercharged cars it has been proved fine. but for high power NA where you sit at high revs 90% of the time I'd be concerned using the standard crank there must of been a reason all the Longman engines used steel cranks? not a cheap option Sad

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Posted 29th Aug 2013 at 08:06
allanallen

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Post #45
superchargedblack1997gti6 wrote:
allanallen wrote:
superchargedblack1997gti6 wrote:
I thought that the original crank wasn't much good over 8k rpm for extended periods Mei? would have said for 280bhp would need to be revving to 8.5-9k ish?


Was this info from the same thread that said the limit for standard rods is 300bhp?? Razz LOL


Nope but to be fair I'm talking about for track use on occasional use in the supercharged cars it has been proved fine. but for high power NA where you sit at high revs 90% of the time I'd be concerned using the standard crank there must of been a reason all the Longman engines used steel cranks? not a cheap option Sad


There's a few about spinning in excess of 8.5k reliably, I'm yet to see a reliable 280bhp longman engine.....LOL

Have you heard of any actually failing?

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Posted 29th Aug 2013 at 08:26
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #46
I'm running a standard crank developing 320ft/lbs and 454bhp, although it's obviously boosted.

However, it still revs to 8k, which I feel is enough.

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 29th Aug 2013 at 08:36
superchargedblack1997gti6

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Post #47
No i haven't seen a failure but seems an excessive waste of 2k to put them in if there's no need.
Stan i know what you're saying and agree the supercharged conversion revs to 8k but you don't have to sit there all the time to feel the power you prob make 280bhp at 6-7k so no need to wind it right round.
I did ask My engine builder and he said no need for a steel crank! but that's supercharged not NA.

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Posted 29th Aug 2013 at 08:41
rallyeash

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Location: Devizes

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Post #48
Use a steel diesel crank and get one for about £75!

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Posted 29th Aug 2013 at 08:57
dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

Posts: 10,305

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Post #49
280bhp N/A vs 450bhp charged. Which would be more fun to drive and which would feel faster? Wink

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  • Posted 29th Aug 2013 at 09:21
    welshpug!

    Capt Pedantic

    Location: Bigend, Wales.

    Registered: 27 Mar 2007

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    Post #50
    280 for sure Razz

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    Bring on the Trumpets.

    Posted 29th Aug 2013 at 10:04

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