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How much boost... #307039
28/02/2007 20:24
28/02/2007 20:24
Joined: Dec 2005
Posts: 12,321
Sandhurst
Begbie Offline OP
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Posts: 12,321
Sandhurst
is used to achieve this?

I know what it is and if some people are clever, they will be able to find the answer smile Oh and it is 322BHP and 290lbs



Originally Posted by Jonny - After being taken out at Spa
Your car is Usain Bolt with wellies
Re: How much boost... [Re: Begbie] #307055
28/02/2007 20:42
28/02/2007 20:42

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I cant see the graph, but whos car is it?

Ross

Re: How much boost... [Re: ] #307068
28/02/2007 21:00
28/02/2007 21:00
Joined: Dec 2005
Posts: 12,321
Sandhurst
Begbie Offline OP
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Not saying, and what do you mean you cant see it? Link works fine


Originally Posted by Jonny - After being taken out at Spa
Your car is Usain Bolt with wellies
Re: How much boost... [Re: Begbie] #307077
28/02/2007 21:05
28/02/2007 21:05

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Yeah im at work sorry!!! laugh

I'll guess 0.9 bar.

Ross

Re: How much boost... [Re: ] #307237
01/03/2007 00:36
01/03/2007 00:36

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So I've trawled through Begbies photobucket account and can't find any hint, looked on the Hall of Fame and no-one matches those figures. Looked on the evo forum just incase you'd posted up a link there wink

I'd guess that you've finished your engine and your doing some 'running in' - so 0.8?

Oh and I haven't got a clue how you would work it out either.

Chris

Re: How much boost... [Re: ] #307239
01/03/2007 00:41
01/03/2007 00:41

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Actually on second thoughts AutoGym is in Chester.....

Oh I give up already (never been known for my patience)

Re: How much boost... [Re: ] #307242
01/03/2007 00:46
01/03/2007 00:46

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Ok last guess. Is it Mavric (from near Chester) or Taz running in a newly rebuilt 2.4 on tiny boost - like 0.6 bar?

Re: How much boost... [Re: ] #307279
01/03/2007 01:24
01/03/2007 01:24

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Id say a lot lower more like 0.6 or less as there is no real boost spike there and knowing what you have done to the engine maybe even the wastegate is strapped open??

Re: How much boost... [Re: ] #307280
01/03/2007 01:25
01/03/2007 01:25

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Also the low torque and headline BHP and smooth curve with no BIG blip show hardly any boost.

Re: How much boost... [Re: ] #307468
01/03/2007 04:11
01/03/2007 04:11

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Come on Begbie.... I won't be able to sleep at night.... smile

Re: How much boost... [Re: ] #307495
01/03/2007 04:37
01/03/2007 04:37

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I'd guess Taz

Re: How much boost... [Re: ] #307592
01/03/2007 12:25
01/03/2007 12:25

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0.3-0.4 max!

Re: How much boost... [Re: ] #307639
01/03/2007 14:37
01/03/2007 14:37
Joined: Dec 2005
Posts: 9,707
Gone
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Jimbo Offline
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0.5 bar smile

Re: How much boost... [Re: Jimbo] #307645
01/03/2007 14:50
01/03/2007 14:50
Joined: Dec 2005
Posts: 12,321
Sandhurst
Begbie Offline OP
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Sandhurst
Anymore for anymore? tongue


Originally Posted by Jonny - After being taken out at Spa
Your car is Usain Bolt with wellies
Re: How much boost... [Re: Begbie] #307651
01/03/2007 14:56
01/03/2007 14:56
Joined: Dec 2005
Posts: 1,877
Islington
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0.27 bar

Re: How much boost... [Re: strike4A] #307658
01/03/2007 15:04
01/03/2007 15:04

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16vt with gt35 runnig on o.5 bar.

open it up, let it breathe...let's see the graph while running on 1.5 bar wink

Re: How much boost... [Re: ] #307731
01/03/2007 16:52
01/03/2007 16:52
Joined: Dec 2005
Posts: 12,321
Sandhurst
Begbie Offline OP
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Got to give it to H2ypr really, it is a chap on the integrale forum, who's aim was to run 300bhp on 1bar of boost, instead he is running 322bhp @ 0.95 bar of boost.

The only spec he is giving is :

OE bottom end, balanced carefully.
higher lift cams (11.x lift)
ported head and inlet manifold
RT manifold and exhaust (RT manifold costs about 2k)
Semi roller bearing turbo
chargecooler system
Motec
1000cc injectors

The bits in bold are additional comments later in the thread he posted or stuff i have remembered from the past.

So what is the point of this thread? Just goes to show a well spec'd engine / parts can give you a better increase in power / more reliable engine than just upping the boost smile


Originally Posted by Jonny - After being taken out at Spa
Your car is Usain Bolt with wellies
Re: How much boost... [Re: Begbie] #307733
01/03/2007 16:55
01/03/2007 16:55

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Surely the first thing he will do is turn the boost up as high as it will go ? laugh

Re: How much boost... [Re: ] #307760
01/03/2007 17:33
01/03/2007 17:33
Joined: Dec 2005
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Why run 1000cc injectors if you aren't going to turn that up to 2bar, even then it's overkill?!!


[Linked Image]

Re: How much boost... [Re: ] #307762
01/03/2007 17:33
01/03/2007 17:33

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laugh

definitely what I'd do!

Re: How much boost... [Re: Flea] #307764
01/03/2007 17:37
01/03/2007 17:37

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Originally Posted by Flea
Why run 1000cc injectors if you aren't going to turn that up to 2bar, even then it's overkill?!!


same question goes with me...everything else is understandable, but 4x1000 cc injectors?

Re: How much boost... [Re: Flea] #307777
01/03/2007 17:51
01/03/2007 17:51

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Poor chap, rebuilding an engine and than put in OE pistons... Power is impressive tough.

what is an RT manifold?

He must have a different spring setup too if he's running cams with 11.Xmm lift

Begbie you are absolutely right. A good designed engine will be more efficient and reliable. We rebuild an alfa 33 1.7 16V boxer engine (N/A) to deliver 195hp and 200Nm of torque (on drla40 carburettors). That was impressive too!

What i still don't get is why that the parts remain so expensive for the integrale/delta. There seems to be a lot of interest and mondial sold loads of abarth pistons for the integrale back then. Lampredi engines are around like forever!

For example you could rebuild a chevy/mustang small block for 1/3 of the price. All performance parts are available.

Re: How much boost... [Re: ] #307778
01/03/2007 17:54
01/03/2007 17:54
Joined: Dec 2005
Posts: 10,747
N.E Scotland
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But if he's only going to run 0.95 bar, how's he going to get his Blue Peter 'High Boost Hero Badge?' cry


Death-rattle-tastic
Re: How much boost... [Re: mattB] #307793
01/03/2007 18:04
01/03/2007 18:04

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Wow that is impressive. Suba's results from his 0.9 bar show 310bhp aswell.

Only reason i said 0.9 is because i thought he'd be running a 1 bar actuator which doesnt really deliver a full 1 bar as base boost. Well done to him i say.

Ross

Re: How much boost... [Re: ] #307809
01/03/2007 18:24
01/03/2007 18:24
Joined: Dec 2005
Posts: 12,321
Sandhurst
Begbie Offline OP
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Dink - the RT manifold is from a company here called Racing Technologies where they make very nice items at a very expensive price, but they get customers with bottomless pockets to do the work. Someone did ask a few questions and are below:

Quote
"Noticed that the maximum power (you mentioned) is already reached at 0,95 bar. Was there a higher design goal (like higher engine or bearing life or fuel consumption)? "

The goal was 300bhp at 1bar. I will however up the torque significantly by upping the boost to 1.3 bar which should give around 340 ft lb of torque but I will not let it run at that level all the way up the rev range as the OE pistons can not take it at higher rpm.

"What i wondered about was: which cams (higher lift doesn't mean much), which turbo specs (T3 with roller bearings, which A/R or a more modern GT-RS?)"

The cams and turbo are my trade secrets but the lift is over 11.5 mm and duration is long. I manufacture and sell them through Keith at AI if you want to buy them. Just ask him for the 'lunatic version' which does require deeper piston pockets. I do a more mild version that uses OE piston pockets.

"And why a MoTec ECU if "only" 300 BHP is the goal? Or are you going to develop it further?"

Motec gives mapping flexibility and that is what I want. I am forever improving onthe map onthe road and like the flexibility of the ecu.

"Why 1000 cc injectors when 500's could do? Future mods planned?"

Believe it or not running any sort of boost at high rpm necessitates huge injectors. While most people tail off the boost after 5500rpm I can run at full boost up to 7500rpm if I like.

"Guess you changed the exhaust too? Of course it isn't an engine spec but it says some about the power that can be developed. Is it std,2 1/2", 3"?"

3" bespoke system with 3 boxes for quietness but low restrictions.


Originally Posted by Jonny - After being taken out at Spa
Your car is Usain Bolt with wellies
Re: How much boost... [Re: ] #307812
01/03/2007 18:26
01/03/2007 18:26

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all I can say is: such a waste of money.

Re: How much boost... [Re: ] #307821
01/03/2007 18:35
01/03/2007 18:35

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Originally Posted by djsly
all I can say is: such a waste of money.


Tuning potential is huge tho. Whip the internals out and replace and then up the boost and away ya go.

Ross

Re: How much boost... [Re: ] #307856
01/03/2007 19:10
01/03/2007 19:10

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em ... there are lots of 20VT people on here getting 300 BHP or close to it at 1bar or less: .... Suba , Me and I presume Kenno? The torque figure is impressive thou!

Last edited by davidub; 01/03/2007 19:17.
Re: How much boost... [Re: ] #308006
01/03/2007 21:55
01/03/2007 21:55

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on my old 2.0 engine I got 340BHP @ 1.1bar smile

Re: How much boost... [Re: ] #308029
01/03/2007 22:22
01/03/2007 22:22
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Castle Combe
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On my current 2 litre I get 330bhp @ 0.9bar smile


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