Best , Easiest & Cheapest way to 300bhp+???
Discussion
siwes said:
285 bhp on a rolling road , losses through transmission as previously stated 15-17% depending how well you maintain your drive trains
285 divide by 100 = 2.85 X 15 = 42.8 + 285 = 328 IHP
wow almost the stated TVR figure did we account for the tyre friction on 17 inch wheels , barametric pressure, high octain fuel, general wear and tear on your engine , ie old plugs , timing set at optimum, did you have low friction Mobile 1 in the sump, air filters clean fuel injectors a bit worn
get real
regards
What the hell are you talking about?
Alex said:
285 bhp on a rolling road , losses through transmission as previously stated 15-17% depending how well you maintain your drive trains
285 divide by 100 = 2.85 X 15 = 42.8 + 285 = 328 IHP
wow almost the stated TVR figure did we account for the tyre friction on 17 inch wheels , barametric pressure, high octain fuel, general wear and tear on your engine , ie old plugs , timing set at optimum, did you have low friction Mobile 1 in the sump, air filters clean fuel injectors a bit worn
get real
regards
What the hell are you talking about?
Quite right Alex (IMHO) AFAIK the the RR figures are more like 245bhp measured plus the 15% adjustment to bring it to 281bhp, say. I think that siwes may have added on the adjustment twice.
Rich...
no , I have no axe to grind, I speak the truth, it really is not worth paying in excess of 3000 GBP for an extra 20 hp if you are lucky. As stated befor you can buy a 450 hp ford V8 for 3000 pounds!
I think what people get mixed up with is after paying all that money out on " up grades " they get a smoothe running well serviced engine wich they mistake for extra HP
an extra 17-20 hp makes hardly a jot of difference to the performance of the car
the plastic, sorry carbon fibre plenum looks nice but my god the price
a new set of plugs , leads and clean air filters, proberly make the biggest difference, and that cost is about 200 pounds as I said before get real you lot must have more money than sense, I used to have but now I've got more sense.
simon
I think what people get mixed up with is after paying all that money out on " up grades " they get a smoothe running well serviced engine wich they mistake for extra HP
an extra 17-20 hp makes hardly a jot of difference to the performance of the car
the plastic, sorry carbon fibre plenum looks nice but my god the price
a new set of plugs , leads and clean air filters, proberly make the biggest difference, and that cost is about 200 pounds as I said before get real you lot must have more money than sense, I used to have but now I've got more sense. simon
siwes said:
no , I have no axe to grind, I speak the truth, it really is not worth paying in excess of 3000 GBP for an extra 20 hp if you are lucky. As stated befor you can buy a 450 hp ford V8 for 3000 pounds!
Then the chassis has to be modified to fit the engine etc etc so more cost
siwes said:
an extra 17-20 hp makes hardly a jot of difference to the performance of the car
Depends how much you had in the first place on most 4l chims thats approx 10%
siwes said:
the plastic, sorry carbon fibre plenum looks nice but my god the price
Quality costs,plus i can fit it myself
siwes said:
If the car is kept well serviced simply replacing that lot will make bu66er all difference so thats £200 wasted IMHO
siwes said:
as I said before get real you lot must have more money than sense,
simon
If was simply down to that nobody would drive a sports car
Besides some people enjoy tinkering with their cars
>> Edited by Pies on Saturday 7th August 22:40
Who are we to say whether it is worth spending somebody else's money for an upgrade? The upgrade I had on the original 4 liter engine included various ACT bits as well as hads, cam etc. Incidentally, way back when I first started thinking about upgrades I took advice from everybody I could find. ACT gave me very helpful advice about the overall package, and although I bought parts from them I felt the advice was completely impartial and there was no hard sell involved. Tim of ACT started off by outlining the major options, what they would cost and how much difference they would make to the engine. It is interesting to note that Tim's predictions turned out to be spot on. Although the changes only increased the peak power slightly (about 15%) it made a huge difference to the feel of the car, throttle response was much improved and the car would pull strongly up to the red line instead of fading off at the top end.
When the subject of upgrades comes up, tweaking the engine usually comes a long way down the list of things I recommend. There are lots of other, better ways to make the car and driver faster, and even if you do want more power tweaking the engine is often not the most cost effective way to get it. But for some people it is the right answer, and there are very useful gains to be had.
When the subject of upgrades comes up, tweaking the engine usually comes a long way down the list of things I recommend. There are lots of other, better ways to make the car and driver faster, and even if you do want more power tweaking the engine is often not the most cost effective way to get it. But for some people it is the right answer, and there are very useful gains to be had.
I thought the biggest problem with fitting an alternative American V8 was the increase in weight, which not only dilutes the additional power in the power to weight ratio, but upsets the handling of the car because it makes it nose heavy. Or can you now get other aluminum block V8s?
Also there isn't much room under the bonnet. Do you know for sure it would fit with all the ancillaries and exhausts?
Also there isn't much room under the bonnet. Do you know for sure it would fit with all the ancillaries and exhausts?
Starmist.
Nose heavy ? in a Griff? that would be a good thing for a car that has the aerodynamics of an aeroplane wing, it wants to take off at speeds approaching 140 mph, another reason why spending thousands to get more HP out a very dated engine is not a good idea.
Before all you lot get the hump I love the Griff as much as anyone here its just Im a bit more realistic than some people here, or at least I tell the truth and of course not everyone can deal with that
simon
Nose heavy ? in a Griff? that would be a good thing for a car that has the aerodynamics of an aeroplane wing, it wants to take off at speeds approaching 140 mph, another reason why spending thousands to get more HP out a very dated engine is not a good idea.
Before all you lot get the hump I love the Griff as much as anyone here its just Im a bit more realistic than some people here, or at least I tell the truth and of course not everyone can deal with that
simon
siwes said:
Nose heavy ? in a Griff? that would be a good thing for a car that has the aerodynamics of an aeroplane wing, it wants to take off at speeds approaching 140 mph, another reason why spending thousands to get more HP out a very dated engine is not a good idea.
Before all you lot get the hump I love the Griff as much as anyone here its just Im a bit more realistic than some people here, or at least I tell the truth and of course not everyone can deal with that
Simon I think that you have a good general point in that all Griffs are fast to start with but that is one of your worst replies. American V8s are not much heavier at all, the exhaust manifolds are the biggest problem because the engines tend to be a little bit wider. Most cars are shaped like aeroplane wings - why the Griff has the front splitter/spoiler and why keep halving the potential power gains from 35 to 40 bhp to your 17-20?
Other factors come into play here, tyre pressures etc but essentially the Griff is going to lift just aft of the centreline if you go fast enough, I know plenty who have had an indicated 165mph . It might help with the roof off. I left the boot open on mine once and it lifted at around 60 mph so there is definately lower pressure over the back wheels, how much it affects the car depends on these 'other factors'......and the size of the drivers cahones
. It might help with the roof off. I left the boot open on mine once and it lifted at around 60 mph so there is definately lower pressure over the back wheels, how much it affects the car depends on these 'other factors'......and the size of the drivers cahones
Thanks for all the comments on here, however varied they may be!
Went to Austec on Saturday for a couple of things, one of them being having a natter about possible upgrades as previously mentioned and the outcome was that basically, its not worth trying to do any decent upgrades unless you've got some serious amounts of cash floating about. My idea was to try and find out what I could do for a few hundred notes and I was planing on fitting the ACT air inlet pipe to replace the standard one. It's become apparent that if I were to do that properly I should upgrade the injectors as well and I just don't currently have the budget for that kind of work.
I'm a big fan of the old saying "if you're going to do something, do it properly" which means probably a couple of grand needed being spent so it seems that upgrades are out of the question at the moment, unless anyone has any oher suggestions!
Might have to spend the money on some track days or have a laugh with 1st Lotus or something!
Cheers - Chris
Went to Austec on Saturday for a couple of things, one of them being having a natter about possible upgrades as previously mentioned and the outcome was that basically, its not worth trying to do any decent upgrades unless you've got some serious amounts of cash floating about. My idea was to try and find out what I could do for a few hundred notes and I was planing on fitting the ACT air inlet pipe to replace the standard one. It's become apparent that if I were to do that properly I should upgrade the injectors as well and I just don't currently have the budget for that kind of work.
I'm a big fan of the old saying "if you're going to do something, do it properly" which means probably a couple of grand needed being spent so it seems that upgrades are out of the question at the moment, unless anyone has any oher suggestions!
Might have to spend the money on some track days or have a laugh with 1st Lotus or something!
Cheers - Chris
Nano2nd said:
so are Austec saying just fitting the ACT silcion pipe/s is gonna mean you'll be running your injectors flat out? i'm suprised by that!
Not really, but it kind of figures that if you increase the amount of air getting into the engine, which that helps to do, then the injectors might struggle to keep up. Now I'm the opposite of an expert on this so I stand to be corrected but I've read about others having to upgrade their injectors because of things like this. Although that maybe due to more work being done on induction than just the ACT inlet pipe, i.e. triple plenums/carbon trumpets etc.
I'll stop now before I get even more out of my depth though!
My main point was that I don't personally want to do one without doing the other, which I currently can't afford!
apache said:That's why I need to fit a huge Max Power wing on my boot! (Carbob Fibre, of course!)
Other factors come into play here, tyre pressures etc but essentially the Griff is going to lift just aft of the centreline if you go fast enough, I know plenty who have had an indicated 165mph
Painey said:The ACT inlet pipe and its own will give you an increase in power, but perhaps not as much as you would get with new injectors / other inlet work. There is no reason why you shouldn't do this in isolation. Speak to Mark Adams (if you can get hold of him) or Tim Lamont at ACT. They'll both tell you the same thing!
so are Austec saying just fitting the ACT silcion pipe/s is gonna mean you'll be running your injectors flat out? i'm suprised by that!
Not really, but it kind of figures that if you increase the amount of air getting into the engine, which that helps to do, then the injectors might struggle to keep up. Now I'm the opposite of an expert on this so I stand to be corrected but I've read about others having to upgrade their injectors because of things like this. Although that maybe due to more work being done on induction than just the ACT inlet pipe, i.e. triple plenums/carbon trumpets etc.
I'll stop now before I get even more out of my depth though!
My main point was that I don't personally want to do one without doing the other, which I currently can't afford!
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