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Author: Subject: 250-300bhp reliable engine choices
jeffw

posted on 4/6/15 at 04:03 PM Reply With Quote
Do what you like and have some fun.






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Mr C

posted on 4/6/15 at 04:13 PM Reply With Quote
Go for it Coozer, the midlana's built of girders so can do with an extra push. All part of the fun, be boring if we did the same thing





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Paul Turner

posted on 4/6/15 at 04:15 PM Reply With Quote
quote:
Originally posted by jeffw
So in short

crap driver + no power + ill handling car = loser
crap driver + lots of power + ill handling car= loser

driving god + xflow + well set-up car = winner
driving god + lots of power + well set-up car= big winner

With shades of grey in-between


Thanks for sorting that one out for me Paul.

[Edited on 4/6/15 by jeffw]


You missed a couple (which are not in the grey category)

crap driver + lots of power + well set up car = loser

driving god + lots of power (but not drivable) + well set-up car = looser

And I would be tempted to say

novice driver + lots of power + undeveloped car = death wish

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Mr C

posted on 4/6/15 at 04:20 PM Reply With Quote
Quick summary for you..

Paul's way... Winner

Everyone else's way... Loser







Girl walks into a bar and asks for a double entendre, so the barman gave her one

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Paul Turner

posted on 4/6/15 at 04:25 PM Reply With Quote
quote:
Originally posted by Mr C
Quick summary for you..

Paul's way... Winner

Everyone else's way... Loser




Just trying to pass on my almost 27 years of owning a seven.

At the end of the day do what you want but a novice in a 350 bhp car is not sensible IMHO. Build the car, get to know the car and then decide what you want out of it after some miles.

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Irony

posted on 4/6/15 at 04:29 PM Reply With Quote
quote:
Originally posted by Paul Turner
quote:
Originally posted by jeffw
So in short

crap driver + no power + ill handling car = loser
crap driver + lots of power + ill handling car= loser

driving god + xflow + well set-up car = winner
driving god + lots of power + well set-up car= big winner

With shades of grey in-between


Thanks for sorting that one out for me Paul.

[Edited on 4/6/15 by jeffw]


You missed a couple (which are not in the grey category)

crap driver + lots of power + well set up car = loser

driving god + lots of power (but not drivable) + well set-up car = looser

And I would be tempted to say

novice driver + lots of power + undeveloped car = death wish



This is all very well, but who has the most fun?

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jeffw

posted on 4/6/15 at 04:43 PM Reply With Quote
Me lol






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daniel mason

posted on 4/6/15 at 04:45 PM Reply With Quote
^^^definately not the dead novice at the bottom
I do agree with Paul to some extent,in the fact that endless power is not always the answer to a fast car! Like he says,the top bike engined guys are very very fast with modearate power.
But on the flip side,not everyone has the same views and there is no correct answer as its personal. Jeff w's car will out drag most things in a straight line,and sounds epic at the same time. But on the hills probably wouldn't be 'at home' so to speak. Which is probably why he doesn't do them!

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jeffw

posted on 4/6/15 at 04:52 PM Reply With Quote
There is an element of weight involved as well. A 'good' BEC Westfield or Striker will be close to 400Kg and kick out not far off 200BHP. Mine is 630Kg and 397BHP so on short tight circuits I would lose out to a BEC but, at circuits like Goodwood, Combe or Hethel the Phoenix has an aero advantage and the extra power comes into play.

So light nimble cars do best at tight circuits and hillclimbs and lardy fast (epic sounding) cars do best on open fast circuits...who knew !

[Edited on 4/6/15 by jeffw]






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daniel mason

posted on 4/6/15 at 04:56 PM Reply With Quote
You should write a book in it Jeff! Sure to be a best seller
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jeffw

posted on 4/6/15 at 05:04 PM Reply With Quote
just remember I'm the top bidder on your auction sonny Jim....less of the cheek !






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daniel mason

posted on 4/6/15 at 05:09 PM Reply With Quote
I was serious! Teach these boys what power can do!
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matt5964

posted on 4/6/15 at 07:01 PM Reply With Quote
quote:
Originally posted by bombero
quote:
Originally posted by matt5964
I have a crated zetec jenvey said, k6 emerald, dunnell head work, cams, arp, bigger injectors, light flywheel simpson exhaustetc and have 221.3 bhp and 178.9ft/lb. [Edited on 3/6/15 by matt5964]

O/T - Out of interest, what make and duration of cams are you running? Any pics..


Custom dunnell cams.

Ain't got many pics on hear as its a faff to upload, what do you want to see?pics off have some on track, some of exhaust, engin bay?





Luego velocity XT 2.0ltr 221.3bhp 178.9lbft

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matt5964

posted on 4/6/15 at 07:08 PM Reply With Quote
quote:
Originally posted by jeffw
quote:
Originally posted by matt5964

You can't beat N/A for noise,response or smile factor




I would beg to differ....

I understand the N/A is best and you can't use more than 10BHP in a lightweight car on the road attitudes but....how many of the people with these attitudes have driven a high power Rotrex car? I'm not talking Turbos with large torque spikes which spit you off the road but the endless linear push you get from a Rotrex.


Well I've only driven Honda fn2 charged, merc's charged, charged corrardo and a charged 350z, don't get me wrong they were all good in there own right but.. Prefer N/A





Luego velocity XT 2.0ltr 221.3bhp 178.9lbft

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jeffw

posted on 4/6/15 at 08:10 PM Reply With Quote
None of those will be Rotrex'ed






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wylliezx9r

posted on 4/6/15 at 08:23 PM Reply With Quote
quote:
Originally posted by jeffw
None of those will be Rotrex'ed


Stop it Jeff, your making me want to rotrex my S2000 engine now !





I spent a lot of money on booze, birds and fast cars. The rest I just squandered.
George Best

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jeffw

posted on 4/6/15 at 08:25 PM Reply With Quote
Does this help?




or this



[Edited on 4/6/15 by jeffw]






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matt5964

posted on 4/6/15 at 08:40 PM Reply With Quote
quote:
Originally posted by jeffw
None of those will be Rotrex'ed



What makes you say that? Granted the g60 was not it was tuned by jab a sport, but the FN2 cert was and I thought the 350z was, and there are plenty about.

http://www.civinfo.com/forum/classifieds-archive/90433-selling-my-intercooled-rotrex-supercharged-fn2-gt-type-r-380bhp-230lbft-13-000-a.html

rotrex supercharger nissan 350z

http://www.tts-performance.co.uk/#!civic-fn2-sport/c8oo





Luego velocity XT 2.0ltr 221.3bhp 178.9lbft

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jeffw

posted on 4/6/15 at 08:51 PM Reply With Quote
Well the Merc isn't, the G60 isn't and I assumed the rest. Anyway, it is a mute argument and you have stated your position and I've done mine. End of...






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beaver34

posted on 4/6/15 at 09:09 PM Reply With Quote
quote:
Originally posted by coozer
So, am I wasting my time looking for 350 turbo horses?

I've always wanted another turbo motor after my man Montego...

And Kurt has 420 bhp in his demo car...


depends what you want, i have just below that in mine and im still smiling from driving it 2 days ago

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matt5964

posted on 4/6/15 at 09:11 PM Reply With Quote
Never said it was argument.

Yours cert looks a different kettle of fish from your videos.

What box are you using?





Luego velocity XT 2.0ltr 221.3bhp 178.9lbft

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jeffw

posted on 4/6/15 at 09:22 PM Reply With Quote
Quaife 60G






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matt5964

posted on 4/6/15 at 09:32 PM Reply With Quote
Nice, does that allow you to flat shift. Do you need ecu intervention for that





Luego velocity XT 2.0ltr 221.3bhp 178.9lbft

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jeffw

posted on 5/6/15 at 05:20 AM Reply With Quote
The box itself doesn't but you can add electronics which senses the position of the potentiometer barrel and therefore 'sees' when you change gear. This event is then sent the ECU which will retard the ignition and thus allows flatshifting.

I have a Geartronics on the car but it is not wired yet so I am lifting the throttle slightly to change up.






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Oddified

posted on 5/6/15 at 08:58 AM Reply With Quote
The thing i've found with a rotrex compared to turbos or positive displacment type superchargers (Eaton's etc) is the engine runs and drives just like a more powerful/larger NA engine. The engine has exactly the same rev range and characteristics but with a lot more power everywhere.

As for how much power is to much, i think it's more important on how the engine delivers the power in a light weight car. 'Big' power is fine so long as the engine is smooth/tractable and there's no big jumps (such as with a small engine, big turbo and loads of lag) along the way in the power delivery.

Ian

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