Harveys 18g's bhp figs, price and anyone using one
05 October 2012, 09:47 PM
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Harveys 18g's bhp figs, price and anyone using one
After reading some posts I'm looking into an 18g as a 20g will be way too much strain on my engine ATM tbh so was thinking about a Harvey 18g
How much are they?
What bhp figs do they get
And anyone running one
Thanks guys
How much are they?
What bhp figs do they get
And anyone running one
Thanks guys
05 October 2012, 10:54 PM
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Yes an 18g, not a Harvey one but his are good, expect 360/380 on vpower and over 400 is possible with meth, punchy midrange turbo beats a 20g for power up. until 7k regs.
06 October 2012, 07:13 AM
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I've heard andyf's have made 396/7bhp on v power there's one for sale with dyno sheet .
There rarer than hens teeth. 20g's too big for me at present a don't want top end just quick spool
There rarer than hens teeth. 20g's too big for me at present a don't want top end just quick spool
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06 October 2012, 07:37 AM
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Yep i have an andyf 18g. 370ish on vpower 401bhp on meth. Whats more impressive is the flat line torque produced. Theres a graph of mine on here. Just do a search
Last edited by Turbotits; 06 October 2012 at 07:40 AM.
06 October 2012, 10:01 AM
#10
I must be wrong then, very surprised an 18G can make those figures. The ones I've ever come across have been around 350 to 360 bhp, figures of 380 and 396 (above) are well above what I thought an 18G could produce.
Either that or I need to find a new dyno to use...lol...
Either that or I need to find a new dyno to use...lol...
06 October 2012, 12:44 PM
#11
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I must be wrong then, very surprised an 18G can make those figures. The ones I've ever come across have been around 350 to 360 bhp, figures of 380 and 396 (above) are well above what I thought an 18G could produce.
Either that or I need to find a new dyno to use...lol...
Either that or I need to find a new dyno to use...lol...
06 October 2012, 02:10 PM
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There's a million and one posts of dubious dyno results and a million and one posts on one dyno result to another ,
06 October 2012, 08:51 PM
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Example, I purchased a gtir that had a dyno graph from well lane claiming 400 bhp, took it to a tuner i've used for years and it made 315bhp and the map was ****e.
My scooby is running a harvey 20g and has run 358bhp on a trusted set of rollers.
06 October 2012, 10:12 PM
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06 October 2012, 10:17 PM
#20
My AF 20G made 380 on Zens rollers on V-power before we used meth.
I honestly can not see how an 18G would make that power (or more as above poster) on the same rollers. I've now got to the point where dyno figures don't interest me as they differ so much from one set to another. Either turbo is gonna make good power and in a classic is very nippy.
I honestly can not see how an 18G would make that power (or more as above poster) on the same rollers. I've now got to the point where dyno figures don't interest me as they differ so much from one set to another. Either turbo is gonna make good power and in a classic is very nippy.
06 October 2012, 10:28 PM
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My AF 20G made 380 on Zens rollers on V-power before we used meth.
I honestly can not see how an 18G would make that power (or more as above poster) on the same rollers. I've now got to the point where dyno figures don't interest me as they differ so much from one set to another. Either turbo is gonna make good power and in a classic is very nippy.
I honestly can not see how an 18G would make that power (or more as above poster) on the same rollers. I've now got to the point where dyno figures don't interest me as they differ so much from one set to another. Either turbo is gonna make good power and in a classic is very nippy.
That's because they won't..
Andy Forrest turbo spec...
http://www.andyforrestperformance.co.uk/16307.html
Take your car on certain rollers and yeah.... great you have 400bhp....
Try your car on the road against others, and see how you fair...
07 October 2012, 08:02 AM
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It does seem dynod are like women on a period .
There was one on a local forum made if I remember 387 bhp and on another at a rr day 403 so can't quite fathom out these dyno sheets
The 18g's seem very good for torque and mid range defnitly my next mod if one comes up
There was one on a local forum made if I remember 387 bhp and on another at a rr day 403 so can't quite fathom out these dyno sheets
The 18g's seem very good for torque and mid range defnitly my next mod if one comes up
07 October 2012, 11:07 PM
#25
They vary because of air temp, density and fuel ratio, it's not an exact science, the graphs above are a good example of slightly different figures.
Put the same car on the same rollers on different days and you will have different results within 5/20bhp especialy in the uk where climate changes on a daily basis.
I don't care about numbers it's how it drives that matters.
Put the same car on the same rollers on different days and you will have different results within 5/20bhp especialy in the uk where climate changes on a daily basis.
I don't care about numbers it's how it drives that matters.
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