#286: Re: Macs rally 206 project.. New engine deal Author: Seabook, Posted: Tue Aug 16, 2011 4:45 pm ---- provided you got 183 HP and 167 ft/lb before the headwork and piston.
i take you will have around 20% gain;
so about 220bhp and 200 ft/lb torque.
standard longman gti hit 190 bhp and 170 ft/lb with standard valve and 40mm ITB; with larger valves and higher compression surely can pass 200 very easy.
#287: Re: Macs rally 206 project.. New engine deal Author: Schumi, Location: Istanbul / TurkeyPosted: Wed Aug 17, 2011 9:12 am ---- Put methanol injection on your car if you worry about knock with higher compression ratio. But if it is really a race car why you are worrying about engine. We are running 14.5:1 CR on 206 GTI (again 14.5) and it is daily use car. After 1 year we didnt have any problem with them. Even knock. Just a good tuner will listen special knock kit when mapping. And higher CR will give you more low end torque. Not loss. It is everything about tuning.
#288: Re: Macs rally 206 project.. New engine deal Author: Seabook, Posted: Wed Aug 17, 2011 9:59 am ----
Schumi wrote:
Put methanol injection on your car if you worry about knock with higher compression ratio. But if it is really a race car why you are worrying about engine. We are running 14.5:1 CR on 206 GTI (again 14.5) and it is daily use car. After 1 year we didnt have any problem with them. Even knock. Just a good tuner will listen special knock kit when mapping. And higher CR will give you more low end torque. Not loss. It is everything about tuning.
that's illegal in UK i believe
#289: Re: Macs rally 206 project.. Guess the HP poll Author: macj, Location: EssexPosted: Wed Aug 17, 2011 11:50 am ---- nice idea Schumi... but we have to provide a fuel sample which must only contain "pump" fuel...... but I like your thinking
#290: Re: Macs rally 206 project.. Guess the HP poll Author: Seabook, Posted: Wed Aug 17, 2011 12:59 pm ----
macj wrote:
nice idea Schumi... but we have to provide a fuel sample which must only contain "pump" fuel...... but I like your thinking
how about octane booster?
allowed or not?
#291: Re: Macs rally 206 project.. Guess the HP poll Author: macj, Location: EssexPosted: Wed Aug 17, 2011 1:01 pm ----
Seabook wrote:
macj wrote:
nice idea Schumi... but we have to provide a fuel sample which must only contain "pump" fuel...... but I like your thinking
how about octane booster?
allowed or not?
not if it takes it over pump fuel... Shell Optimax, or whatever its called now is all thats permitted
#292: Re: Macs rally 206 project.. Guess the HP poll Author: Seabook, Posted: Wed Aug 17, 2011 1:54 pm ---- it's a shame that BP discontious their BP Ultimate 102 petrol few years ago....
#293: Re: Macs rally 206 project.. Guess the HP poll Author: Schumi, Location: Istanbul / TurkeyPosted: Wed Aug 17, 2011 2:45 pm ---- Oke. If meth not allowed in rules how about pure water ?
#294: Re: Macs rally 206 project.. Guess the HP poll Author: macj, Location: EssexPosted: Thu Aug 18, 2011 7:25 am ---- water injection is permitted.... not what I want to be doing though TBH
#295: Re: Macs rally 206 project.. New engine deal Author: Edward, Location: In the garagePosted: Thu Aug 18, 2011 11:45 am ----
Seabook wrote:
so about 220bhp and 200 ft/lb torque.
standard longman gti hit 190 bhp and 170 ft/lb with standard valve and 40mm ITB; with larger valves and higher compression surely can pass 200 very easy.
220bhp on standard cams? Increased compression and bigger valves won't let significantly more air into the engine.
BHP is a measure of the rate of work an engine can do. The best way of increasing this is simply to fit longer duration cams which allow the engine to rev higher (so it does more work). They are key to a higher BHP figure.
100lb ft / litre is virtually unheard of on a N/A engine.
The Longman engines also had an uprated inlet cam.
#296: Re: Macs rally 206 project.. New engine deal Author: Seabook, Posted: Thu Aug 18, 2011 12:25 pm ----
Edward wrote:
Seabook wrote:
so about 220bhp and 200 ft/lb torque.
standard longman gti hit 190 bhp and 170 ft/lb with standard valve and 40mm ITB; with larger valves and higher compression surely can pass 200 very easy.
220bhp on standard cams? Increased compression and bigger valves won't let significantly more air into the engine.
BHP is a measure of the rate of work an engine can do. The best way of increasing this is simply to fit longer duration cams which allow the engine to rev higher (so it does more work). They are key to a higher BHP figure.
100lb ft / litre is virtually unheard of on a N/A engine.
The Longman engines also had an uprated inlet cam.
just did a bit of homework you are right
so what's you guess then?
#297: Re: Macs rally 206 project.. Guess the HP poll Author: macj, Location: EssexPosted: Thu Aug 18, 2011 12:51 pm ---- I am expecting 190 odd hp but the most important thing is the torque. I am hoping to get 175- 180ft/lb with a lot of it low down the rev range where I need it
#298: Re: Macs rally 206 project.. Guess the HP poll Author: Seabook, Posted: Fri Aug 19, 2011 2:43 pm ---- when will your new engine be ready?
#299: Re: Macs rally 206 project.. Guess the HP poll Author: macj, Location: EssexPosted: Sat Aug 20, 2011 6:12 am ----
Seabook wrote:
when will your new engine be ready?
I took the rods and pistons over today (sat) so I guess it will be another week till its ready to re-fit
Last edited by macj on Sun Aug 21, 2011 6:50 am; edited 1 time in total
#300: Re: Macs rally 206 project.. Guess the HP poll Author: Seabook, Posted: Sat Aug 20, 2011 11:23 am ----
macj wrote:
Seabook wrote:
when will your new engine be ready?
I took the rods and pistons over today (sat) so I guess it will be another week till its ready to re-fit
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