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My nova: 1.55 bar = 457bhp, 2.1 bar = update on page 5

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Old 19-12-2009, 04:03 PM
  #81  
carlo
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The noise must give ppl a fright thats never been in it as i would imagine its all about head height in the car. Is there a sheet between you & the engine? wouldnt fancy it throwing a let out of the bed if there wasnt be even better in a vx220 you planning on putting the lump in one?
Old 19-12-2009, 04:43 PM
  #82  
foreigneRS
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Originally Posted by pee vee
??? dont show you where the power comes in with engine under load then ???
yes. but that is nothing to do with lag. what do you think lag means, and it's nothing to do with wrapping up your hot water tank?
Old 19-12-2009, 05:02 PM
  #83  
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lag is the time taken for the turbo to start boosting properly after throttle ? you will be able to see when boost come in on the graph but not when the pedal was pressed?
Old 19-12-2009, 05:25 PM
  #84  
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Originally Posted by fuzzy
lag is the time taken for the turbo to start boosting properly after throttle ? you will be able to see when boost come in on the graph but not when the pedal was pressed?
Lag is the time taken for a turbo to produce full boost once at the rpm it can produce full boost at. Most folk on here seem to confuse lag with boost threshold.
Old 19-12-2009, 05:27 PM
  #85  
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Originally Posted by Chip
Was only on .9 bar at the time, probably making 300bhp ish and I was only revving it to just under 7K where as I can now go to past 8K

Its night and day different now mate, as much difference between it now compared to then, as in yours compared to an average stage 3 saph!
i take it its not running lean at top end now
Old 19-12-2009, 06:21 PM
  #86  
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Originally Posted by clarke5700
i take it its not running lean at top end now
no mate that was on an off the shelf chip when I was ruunning it in. its ok now im on aftermarket as obviousy I can map it myself now.
Old 19-12-2009, 10:07 PM
  #87  
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Originally Posted by pee vee
??? dont show you where the power comes in with engine under load then ???
thats boost threshold, not lag
Old 19-12-2009, 10:30 PM
  #88  
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Originally Posted by Chip
lol @ nick

im just quoting the figure out of interest im not claiming it to be 100% accurate. its just the only figure I have
if it ever goes on a dyno out of the car i'll update


pee vee
it feels a lot laggier now due to two differences.
first difference is this maps not finished yet so its losing a litle power offboost and second is its got loads more power on boost now
so where as before it wasn't much diferent on or off boost now its night and day.
will take you out again some time. its nuts at 6-7k easily comparable to dougs escort or porkies old 3 door in terms of the shove in your back

dingla. I figured if I have a nova it may as well be a weird one. lol

danny. yeah the engine has more scope than the chassis or transmision really. needs to be put on an m32 box and put in a vx220. lol
Will the m32 take that kind of torque?
Old 20-12-2009, 02:11 AM
  #89  
Chip
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Originally Posted by Drunken Master
Will the m32 take that kind of torque?
It will take it better than the F23 that I am running currently, and so far (touch wood!) thats been ok.

I dont expect it to last long though.
Old 20-12-2009, 02:13 AM
  #90  
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Originally Posted by carlo
The noise must give ppl a fright thats never been in it as i would imagine its all about head height in the car. Is there a sheet between you & the engine? wouldnt fancy it throwing a let out of the bed if there wasnt be even better in a vx220 you planning on putting the lump in one?
Its got double glazed perspex between me and it, but if it did put a leg out of bed, I doubt that would stop it, so just a lottery where the bits go I guess, lol

Not sure what my longer term plans are TBH, vx is certainly an option, but going to play with the nova a bit longer first.
Old 20-12-2009, 08:23 AM
  #91  
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i still stand by text the other day lol!

i bet its a bit of handfull lol
Old 20-12-2009, 08:43 AM
  #92  
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Originally Posted by Chip
300bhp can be done for peanuts and in a stripped nova weighing only 800kg is mentallyquick.
Thats enough to give 250@wheels, which is over 300bhp@wheels per tonne

So you get the same sort of acceleration at normal road speeds (ie 30-120 or so) as you would from a 500bhp escos

Properly cheap way to be very quick
to right mate that nova is a right handful and plenty of fun its funny seeing subarus, evos etc being wasted by it.

i used to own a nova sr running twin 40s,big valved head fast road cam etc that was such a fun car also, think if i get a nova turbo ill want about 320bhp which is more than enough id say for on the road, mind you i want get the r5 over 200bhp before summer
Old 20-12-2009, 10:17 AM
  #93  
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Originally Posted by Chip
Its got double glazed perspex between me and it, but if it did put a leg out of bed, I doubt that would stop it, so just a lottery where the bits go I guess, lol
perspex? why use that when polycarbonate is cheaply available and much better for the job?
Old 20-12-2009, 10:34 AM
  #94  
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Originally Posted by Chip
300bhp can be done for peanuts and in a stripped nova weighing only 800kg is mentallyquick.
Thats enough to give 250@wheels, which is over 300bhp@wheels per tonne

So you get the same sort of acceleration at normal road speeds (ie 30-120 or so) as you would from a 500bhp escos

Properly cheap way to be very quick
is 300hp really that fast ie as fast as a 500hp escos?? what could you compare a 370hp 900kg fiesta turbo to ?? (30-130 or so) about the same ?
Old 20-12-2009, 10:44 AM
  #95  
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On the road a proper 300hp nova is brutally fast and lets face it thats a stock let with some chips, easy on a small budget.

Throw a Gt30 on a half sensible engine build and your well over 400hp and that is about as fast as anyone would need to go on the road.

Gavs Corsa although more mismatched than most is ridiculous when its on boost, chews 5th and 6th up like most RST's do 1st and 2nd and he'll admit the powerband is VERY narrow so giving nothing like the results on the road a LET does with a GT30 strapped to it.
Old 20-12-2009, 11:29 AM
  #96  
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Originally Posted by crazycage
is 300hp really that fast ie as fast as a 500hp escos?? what could you compare a 370hp 900kg fiesta turbo to ?? (30-130 or so) about the same ?
A genuine 370bhp in a fiesta turbo at only 900kg would be monstrously fast and would destroy a 500bhp escos from 30-130 where grip isnt an issue.
Old 20-12-2009, 11:30 AM
  #97  
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Originally Posted by foreigneRS
perspex? why use that when polycarbonate is cheaply available and much better for the job?
Yes Pee Vee meant boost threshold when he said lag to describe the wait for the boost to come in versus RPM, and yes I meant polycarb when I used the term perspex to just mean generic clear plastic.
Old 20-12-2009, 04:51 PM
  #98  
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yes i'm being pedantic, but we wouldn't to deal with anything other than facts would we?
Old 20-12-2009, 04:56 PM
  #99  
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Originally Posted by foreigneRS
yes i'm being pedantic, but we wouldn't to deal with anything other than facts would we?
Sadly I dont have the exact grade of plastic used so I cant help you there mate.

I knew what Pee Vee meant anyway and it was me he was talking to, but its always good to clear up the boost threshold and lag thing as so many people misuse it so thanks for taking the time to do so.
Old 20-12-2009, 04:57 PM
  #100  
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Originally Posted by Chip
Yes Pee Vee meant boost threshold when he said lag to describe the wait for the boost to come in versus RPM, and yes I meant polycarb when I used the term perspex to just mean generic clear plastic.
So you never used perspex? Why did you tell us you did? Seems a strange thing to do. Very strange, Chip.

Benni.
Old 20-12-2009, 04:58 PM
  #101  
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Originally Posted by Benni
So you never used perspex? Why did you tell us you did? Seems a strange thing to do. Very strange, Chip.

Benni.
As above, I dont actually know the exact grade of plastic used, never interested me enough to find out, firewall was already in place when I got the car and ive never needed to change it.
Old 20-12-2009, 04:59 PM
  #102  
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awesome results there chip especially at only 22 psi
Old 20-12-2009, 05:01 PM
  #103  
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Originally Posted by Chip
As above, I dont actually know the exact grade of plastic used, never interested me enough to find out, firewall was already in place when I got the car and ive never needed to change it.
In the future I suggest you are honest and tell us you are not sure what grade of plastic is used, instead of claiming you knew it was perspex.

Benni.
Old 20-12-2009, 05:03 PM
  #104  
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Originally Posted by Benni
In the future I suggest you are honest and tell us you are not sure what grade of plastic is used, instead of claiming you knew it was perspex.

Benni.
Go back to the muppet room Benni, not much point you being in a thread about an engine.
Old 20-12-2009, 05:34 PM
  #105  
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Originally Posted by Chip
It will take it better than the F23 that I am running currently, and so far (touch wood!) thats been ok.

I dont expect it to last long though.
The VXR guys have problems with over 330 lb/f t's think the vectra f40 gearbox can take more power but not sure if it's very compatible.
Old 20-12-2009, 05:36 PM
  #106  
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Originally Posted by Drunken Master
The VXR guys have problems with over 330 lb/f t's think the vectra f40 gearbox can take more power but not sure if it's very compatible.
They are heavier cars doing big road mileages, mine is a very different application really, so I think I will get away with a lot more power on one than they do.

Normal upgrade for an ACT with the F23 that I have, is to move onto the M32, and generally they work better afterwards.

F40 box would certainly take the punishment though, but you're getting huge then.

If my F23 will do a half a season on the power Ive got now, i'll just keep swapping it out, as they are only about 150 quid anyway so its not a problem to just throw another one everytime I change the clutch and hence have it off anyway.
Old 20-12-2009, 07:06 PM
  #107  
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Originally Posted by Chip
As above, I dont actually know the exact grade of plastic used, never interested me enough to find out, firewall was already in place when I got the car and ive never needed to change it.
Did you buy it already converted to rear engined then?
Old 20-12-2009, 07:38 PM
  #108  
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Nice m8. Would b nice to c that power out the 5 but like yours my box will die.
What sorta times, 1/4s u seeing? I would have thought mine would b pretty similar, bit less at 420ish bhp but near enough.
Also have you got a graph to look at?
What's yours like at making boost in the lower gears? Mine struggles to make boost in 1-3rd gear, think it's down to cam timing in mine tho(too retarded)
would b fun to c it's and mine side by side.
Old 20-12-2009, 07:57 PM
  #109  
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bloody hell chip!! Well done!!

x
Old 20-12-2009, 11:08 PM
  #110  
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Originally Posted by Chip
They are heavier cars doing big road mileages, mine is a very different application really, so I think I will get away with a lot more power on one than they do.

Normal upgrade for an ACT with the F23 that I have, is to move onto the M32, and generally they work better afterwards.

F40 box would certainly take the punishment though, but you're getting huge then.

If my F23 will do a half a season on the power Ive got now, i'll just keep swapping it out, as they are only about 150 quid anyway so its not a problem to just throw another one everytime I change the clutch and hence have it off anyway.
Not sure how long a season is or what it involves take it drag racing? If so the strain is going to be huge, more so than a road car.

Pretty sure the M32 can be rebuilt, you can buy the parts from fiat or alfa just not from vauxhall.

Last edited by Drunken Master; 20-12-2009 at 11:10 PM.
Old 20-12-2009, 11:29 PM
  #111  
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Stu, no idea what quarter time it does now, will have to take it to central day or something, sadly no quarter mile strips particuarly near me, even our 1/8th mile track got closed down.
Old 20-12-2009, 11:31 PM
  #112  
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Originally Posted by Mondeo Man
Did you buy it already converted to rear engined then?
Yes mate, although more or less all of it has been redone since then, as im now on a totally different engine/box with different mounts, different suspension, different subframe, different gear linkage (its on cable now where as was rod) different clutch setup (its now on an internal slave hydraulic setup not a non hydraulic box) ive welded up all new mounts and brackets etc, only things that remain of the original conversion are basically the firewall, a few bits of box and tube, and the petrol tank, so its about 20% the original conversion effectively I guess, oh and the ghastly looking but very effective headlights were already there too, lol
Old 21-12-2009, 01:32 AM
  #113  
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Chip have you made any inroads into the bumpsteer problems you was having?
Old 21-12-2009, 08:42 AM
  #114  
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Originally Posted by AquariousRS
Chip have you made any inroads into the bumpsteer problems you was having?
Yes mate, I have totally redesigned the rear toe control now, by swapping the struts from left to right it turned the steering arm around to a position where I could get better angles on it, then I lengthened the toe control arms to be the same length as the bottom wishbone and have mounted them level with the bottom wishbone, so they go up and down together now, its totally transformed the handling.

Not really got any great pics of it, but you can kind of see it here:
Name:  struts-swapped.jpg
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Old 21-12-2009, 09:43 AM
  #115  
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Great result Chip

any vids??
Old 21-12-2009, 09:46 AM
  #116  
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I didnt take any videos, although I think Matt might have got one, will ask him.
Old 21-12-2009, 10:05 AM
  #117  
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Its getting there chip!

But your about as likly to finish your C20LET mini as I am mine
Old 21-12-2009, 12:23 PM
  #118  
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wasn't there a vid from a trackday taken from sib's evo?
Old 21-12-2009, 12:27 PM
  #119  
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Originally Posted by AlexF
Its getting there chip!

But your about as likly to finish your C20LET mini as I am mine
Mine WILL get finished mate, I never give up on projects once Ive started, I just end up taking ages.

Last edited by Chip; 21-12-2009 at 12:28 PM.
Old 21-12-2009, 12:28 PM
  #120  
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Originally Posted by DangerousBryan
wasn't there a vid from a trackday taken from sib's evo?
Yeah:
http://www.youtube.com/watch?gl=GB&h...&v=4S8O-Eoaprw


Its changed a LOT since then though, Ive cured the bump steer, its about 50% more power now, and Ive got a much higher rev limiter now.

also in that vid it was on narrow wet rear tyres as I trashed my slicks earlier in the day

so it doesnt really reflect how it would go now


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