| [ Total Views: 1165 | Total Replies: 29 | Thread Id: 106306 ] |
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 giturner1703
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| posted on June 10th, 2014 at 08:45 PM |
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2250cc hp
Just wondered whether 85 hp at the wheels was a reasonable figure. Don't know any engine specs other than its running twin dellorto's & 2250cc
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 Bizarre
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| posted on June 10th, 2014 at 08:48 PM |
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possible
Old motor with leaky stock heads, a mild cam and restrictive exhaust could/would produce less
A lot more info would be required
Futue te ipsum!!!
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matberry
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| posted on June 10th, 2014 at 08:50 PM |
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Lots of variables there, but it is'nt a lot for that size engine, my 2.0 litre type 1 with 043 VW heads makes 122 at the wheels on a bad day 
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vlad01
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| posted on June 10th, 2014 at 11:50 PM |
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I am thinking good combo at that size 160hp or more @ the flywheel, what ever that is at the wheels.
71 notchback,
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DakDak67
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| posted on June 11th, 2014 at 06:03 AM |
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| Quote: | Originally
posted by vlad01
I am thinking good combo at that size 160hp or more @ the flywheel, what ever that is at the wheels.
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more like 125-135 flywheel, 100-105 rwhp
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Governor
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| posted on June 11th, 2014 at 06:49 AM |
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My 2007cc showed 100bhp at the wheels on Leons dyno.
Its not just the size, its the combination of parts.
Anyone can build a motor, its knowing what works!
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vlad01
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| posted on June 11th, 2014 at 10:46 AM |
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| Quote: | Originally
posted by DakDak67
| Quote: | Originally
posted by vlad01
I am thinking good combo at that size 160hp or more @ the flywheel, what ever that is at the wheels.
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more like 125-135 flywheel, 100-105 rwhp
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I said good combo, that sounds like average at best. Or is that expectation too high for a t1 engine lol ?
71 notchback,
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DakDak67
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| posted on June 11th, 2014 at 11:37 AM |
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I would like to know how to get 160hp from my 2276 with idf's, street cam and heads. I'm all ears ...
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matberry
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| posted on June 11th, 2014 at 11:38 AM |
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My 2332 with VW non welded heads and 44x38 valves made 140+ at the wheels, so you're not being unrealistic Vlad
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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matberry
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| posted on June 11th, 2014 at 11:40 AM |
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And since we're on the street Chris, that was under 10:1 comp and totally streetable, 48 IDFs or Dells will do it.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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DakDak67
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| posted on June 11th, 2014 at 12:20 PM |
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| Quote: | Originally
posted by matberry
And since we're on the street Chris, that was under 10:1 comp and totally streetable, 48 IDFs or Dells will do it.
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we'd better step up from 8.5:1 and 44 idf's next build then Matt. That said, your attention to detail and tuning is pretty rare ,
I'll still safely say the average built big engine has no where near 140 on the wheels. Anyway, I would be happy with another 25 HP !!
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Craig Torrens
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| posted on June 11th, 2014 at 12:59 PM |
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| Quote: | Originally
posted by giturner1703
Just wondered whether 85 hp at the wheels was a reasonable figure. Don't know any engine specs other than its running twin dellorto's & 2250cc
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At what RPM was the 85hp ?
Do you have the dyno chart at all ?
Don't fall into the trap of only comparing peak HP numbers.
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vlad01
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| posted on June 11th, 2014 at 01:30 PM |
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| Quote: | Originally
posted by matberry
My 2332 with VW non welded heads and 44x38 valves made 140+ at the wheels, so you're not being unrealistic Vlad
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rule of thumb.
liters = potential power x 100 for real R&D'd NA engines.
it applies to pretty much all engines.
more obtainable figures for general performance builds is about 75hp per L
bog stock engines these days make 60-70hp per L
71 notchback,
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DakDak67
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| posted on June 11th, 2014 at 01:39 PM |
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I'm looking forward to the Dyno day at Leon's. There will be several 2.2+ litre street engines running , I'll post results for the OP to compare .
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vlad01
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| posted on June 11th, 2014 at 01:44 PM |
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| Quote: | Originally
posted by DakDak67
I would like to know how to get 160hp from my 2276 with idf's, street cam and heads. I'm all ears ...
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I have seen one t1 race engine 1500cc make 186hp at the flywheel.
150- 200hp 2270cc is not uncommon for a good combo for t4 engines which makes power everywhere in the rev range.
71 notchback,
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bajachris88
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| posted on June 11th, 2014 at 01:57 PM |
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And particularly if you live in the US. All quoted dub engine hp outputs there are 50% greater. Must be better air in the northern hemisphere
(ô_!_/ô) (ô_!_/ô)
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Craig Torrens
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| posted on June 11th, 2014 at 02:33 PM |
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http://forums.aussieveedubbers.com/viewtopic.php?tid=25222
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vlad01
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| posted on June 11th, 2014 at 03:03 PM |
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| Quote: | Originally
posted by bajachris88
And particularly if you live in the US. All quoted dub engine hp outputs there are 50% greater. Must be better air in the northern hemisphere
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are you talking about HP and PS? or just kidding?
I know a lot of people argue the metric hp is way different to regular hp.
its like 2.4% different.
2.4% is double!!!
71 notchback,
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giturner1703
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| posted on June 11th, 2014 at 08:46 PM |
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I haven't got dyno sheet, but from memory it was about 4700rpm. I know there are a lot of variables that come into it, just didn't think 85 hp was
that good for a 2250cc engine. Having said that, I'm new to this big bore/stroker stuff!
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MrSpeedy
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| posted on June 12th, 2014 at 09:10 AM |
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If it's making its power at that low rpm, it's probably a very mild combination. A friends 2l kombi motor on webers, mild cam etc was just under
80hp at the wheels and is a strong motor for a comparison point.
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Bizarre
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| posted on June 12th, 2014 at 10:13 AM |
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85 ponies at 4,700 ain't to be sneezed at.
Could be a nice torquey streeter that is non stressed
Futue te ipsum!!!
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bajachris88
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| posted on June 12th, 2014 at 10:25 AM |
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Makes sense. Back to fundamentals the power is equal to torque x rotational speed.
So you could have a HUGE torque (like a typical diesel) come about at a nice and low RPM, but because of the low revs it will equate to a small HP.
(ô_!_/ô) (ô_!_/ô)
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New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta! |
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vlad01
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| posted on June 12th, 2014 at 11:01 AM |
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| Quote: | Originally
posted by bajachris88
Makes sense. Back to fundamentals the power is equal to torque x rotational speed.
So you could have a HUGE torque (like a typical diesel) come about at a nice and low RPM, but because of the low revs it will equate to a small HP.
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yes, that means it can haul weight without slowing down much.
but actual power is what give you acceleration. but more importantly is how the power curve looks, if its broad it will give the best performance, if
its peaky, then is useless most of the time until it peaks like ricer cars do.
71 notchback,
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bajachris88
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| posted on June 12th, 2014 at 11:18 AM |
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| Quote: | Originally
posted by vlad01
but actual power is what give you acceleration.
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But the single ports have better buzz off the line than the DPs :P with less HP!
(ô_!_/ô) (ô_!_/ô)
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New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta! |
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vlad01
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| posted on June 12th, 2014 at 11:49 AM |
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yes, thats cos its boarder at the bottom end and fall off quicker at the top end compared to dp gearing is also part of the equation.
I have not see direct comparison between the 2, but I bet the sp has more torque thus more hp available at the low revs than dp does.
if you have 1000 torques and 0rpm, there is 0 hp and it does not move.
good way to look at it if everything else is equal and disregarding the little factors like gear ratios and crap like that
double the hp = double the acceleration
double the rpm but same hp(halving the torque to equal)= same as before
double the torque same hp(halving the rpm to equal)= same as before
but we have torque curve and thus power curves, so in reality acceleration and top speed depend on the curve and gear ratios and other factors like
weight etc..
71 notchback,
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fish26
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| posted on June 12th, 2014 at 02:06 PM |
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85whp @ 4700rpm os ok, what are the Torque figures? Do you like how it drives, does it put a smile on your face, if you answerred yes, what difference
does the amount of HP make?
This whole thread is based on speculative information, no engine combination info and no dyno sheet.
What exactly is a 2250cc, did you buy the engine with the seller telling you the information without substantiated evidence?
Two different engine builders will build two different engines even if the combination of parts are the same and theoretical engine conbinations and
Hp calculations are only a guideline of the outcome eg. mumbo jumbo.
More information please, even just for curiosity.
bitten by the bug..........several times
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vassy66T1
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| posted on June 13th, 2014 at 09:14 AM |
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It makes sense to me now why T4 motors have good torque ... it is because they flow just the same as a single port T1 
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fish26
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| posted on June 13th, 2014 at 12:55 PM |
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Yeah, thats exactly why they make good torque..............
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ian.mezz
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| posted on June 13th, 2014 at 01:32 PM |
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85 good, you don't really get to rev past 5000rpm on the streets to often, just get out on the road and enjoy it .
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vlad01
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| posted on June 13th, 2014 at 07:07 PM |
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| Quote: | Originally
posted by vassy66T1
It makes sense to me now why T4 motors have good torque ... it is because they flow just the same as a single port T1
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Yes t4 have much more efficient head design.
a good t4 combo will make power and torque everywhere, much more than a t1 can.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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