[Revolution Mini Works]

Quote: Originally Posted by Aberdeen Al (original)

I meant this side of the pond Jan I'm well aware of your achievements I've been on NAM and read all the posts including the ones having a go at you

Nope - don't have a Stage 4 GTT head - I've got a Janspeed modified head

thanks Al.... so you know I can dance

btw.... what are the specs on the Janspeed, I thought they only made exhaust manifolds?

[BigShow]

Quote: Originally Posted by Aberdeen Al (original)

237bhp if I remember rightly.....................nope no boost leaks at all....................just one of those things!

It's great once it's above 3500 rpm but pretty dull below it................never mind - that may change soon

Cheers, and I'm presuming you did had a leakdown test done too...? Oh well, some you win but at the end of the day its still a gain and I'm sure your next mods will give you a bit more ooomph!

[roland2003]

big Show, dont know what your hinting at with those fight pics (double meaning mabe) but believe me big means slow , I'll take you on in any way you want.
If we put up a power figure 1320 Jan etc are the first to try and find loopholes (goes wth the teritory I suppose), therefore ditto when there customer puts up a power figure.
Wheel Horse Power? No its not the important figure ,but it is required as part of the flywheel horsepower figure, and as 1320s RR figures are often up ,it allows one to compare losses with other Minis on the same RR. I was correct to quiz, as is now apparant the losses are not in keeping with other Minis .
Rev Limits..................Yep I wouldnt want any customers car to be set any higher than 7200, and for road only cars 7000rpm is plenty. This is due to oil pump failure risk. Its rare but with mileage getting higher it needs to be considered. Check our website even back in 2004 we were saying the same. If I want to set mine to 7400 thats good for you ........we test beyond the loads that our customers cars are pushed to .
Pistons............Weve proved that in a CORRECTLY modified engine (ie good water cooling, intercooling, sensible timing & fuelling) stock pistons are very good eg My car (still on stock pistons with 350 or so BHP ) Lees at 391bhp , Karls GTT260 with loads of track days.
Above this level to give more headroom we can fit Fireball JE pistons. (As Lees is now )

[BigShow]

Quote: Originally Posted by roland2003 (original)

big Show, dont know what your hinting at with those fighting pics (double meaning mabe) but believe me big means slow , I'll take you on in any way you want.
If we put up a power figure 1320 Jan etc are the first to try and find loopholes (goes wth the teritory I suppose), therefore ditto when there customer puts up a power figure.
Wheel Horse Power? No its not the important figure ,but it is required as part of the flywheel horsepower figure, and as 1320s RR figures are often up ,it allows one to compare losses with other Minis on the same RR. I was correct to quiz, as is now apparant the losses are not in keeping with other Minis .
Rev Limits..................Yep I wouldnt want any customers car to be set any higher than 7200, and for road only cars 7000rpm is plenty. This is due to oil pump failure risk. Its rare but with mileage getting higher it needs to be considered. Check our website even back in 2004 we were saying the same. If I want to set mine to 7400 thats good for you ........we test beyond the loads that our customers cars are pushed to .
Pistons............Weve proved that in a CORRECTLY modified engine (ie good water cooling, intercooling, sensible timing & fuelling) stock pistons are very good eg My car (still on stock pistons with 350 or so BHP ) Lees at 391bhp , Karls GTT260 with loads of track days.
Above this level to give more headroom we can fit Fireball JE pistons. (As Lees is now )

Hinting that this Surrey RR match up would be as big as the recent BigShow vs Mayweather showdown as he is my namesake afterall.... trying to lighten the mood I think its called afterall he (BigShow) ended up losing so it wasn't an invitation to throw down, although I'm anything but slow though (except mentally ), 10 years of training in the ancient fighting art of Run-Lak Fekh see's to that.

[batou]

I think Surrey RR may well be worth the meagre entry fee

[Jove]

I got ring side seats

[Paul Webster]

I can guarantee it'll be worth the entry fee. I do like dyno days because its the same as racing, you hope you've found enough trq / bhp to beat the guy in the other lane or in this case the other peeps who are going on the rollers.

If Roland turns up with his I'm sure he'll trounce us espically in the trq department.

[Snowie]

I can not be at SRR day as I will be in Italy - can someone set up live TV feed I realy want to see the battle of the giants.

[lucachiarelli]

I'll bring some sparring kits down to the rr day lol.

[Jove]

Quote: Originally Posted by Snowie (original)

I can not be at SRR day as I will be in Italy - can someone set up live TV feed I realy want to see the battle of the giants.

I'll be taking my video camera.

[lucachiarelli]

Quote: Originally Posted by Snowie (original)

I can not be at SRR day as I will be in Italy - can someone set up live TV feed I realy want to see the battle of the giants.

Alan are you italian or are you moving over there?
I have quite alot of family over there so if your near i'll tell them to sort you out some good home cooking

[Snowie]

Quote: Originally Posted by lucachiarelli (original)

Alan are you italian or are you moving over there?
I have quite alot of family over there so if your near i'll tell them to sort you out some good home cooking

Moving to live in Modena for a few years due to work - furniture moves from UK to Modena in 2 weeks time and we move in on 21 22 April. LHD GP heads to Modena 18th May after the Group GP display at Himely and the charity ball

All Italian contacts and visitors are most welcome

[lucachiarelli]

I have an uncle and aunty in milan and granparents, cousins etc down in calabria. Not exactly close to modena but give us a shout if you visit anywhere near there so they can sort some pasta di casa. lol.

[Paul Webster]

roland2003.
Wheel Horse Power? No its not the important figure ,but it is required as part of the flywheel horsepower figure, and as 1320s RR figures are often up ,it allows one to compare losses with other Minis on the same RR. I was correct to quiz, as is now apparant the losses are not in keeping with other Minis .


You're right to ask the question Roland so you and others have a better understanding, We've seen a low off 28 and Big Shows is the new high at 48.

As you know I prefer whp (thats the American in me) but like you Chris prefers bhp, as Chris pointed out yesterday when he is mapping on the rollers for 3hrs he can loose 10whp due to the tire getting hotter and hotter but it all works itself out when the bhp figure is calculated.

Our software actually meaures horsepower going up then measure it coming down.unlike some which just calculate a % on top of the whp figure.

Intrestingly enough when I overlayed Loui and Big Shows BHP figure they actually match line on line all the way to 6000 within 2.3 bhp, this is when Louis made 239whp 272bhp.

As for the reliability card that you played, Nathan on NAM has as he said previously on this board has over 30k on his RMW head been to 5 different dynos in 3 states and has probably 10 track days what I know off.
He's just picked up another 15ftlb swopping to Jans header / exhaust

Look forward to seeing you at Surrey better build an M45 combo to net 290 though

[Aberdeen Al]

Quote: Originally Posted by Revolution Mini Works (original)

thanks Al.... so you know I can dance

btw.... what are the specs on the Janspeed, I thought they only made exhaust manifolds?

You're welcome

The spec on the Janspeed head is much & such the same as the JCW head so pretty poor by the standards of GTT / RMW / Lohen.

[Revolution Mini Works]

Quote: Originally Posted by 1320autos (original)

roland2003.
Wheel Horse Power? No its not the important figure ,but it is required as part of the flywheel horsepower figure, and as 1320s RR figures are often up ,it allows one to compare losses with other Minis on the same RR. I was correct to quiz, as is now apparant the losses are not in keeping with other Minis .


You're right to ask the question Roland so you and others have a better understanding, We've seen a low off 28 and Big Shows is the new high at 48.

As you know I prefer whp (thats the American in me) but like you Chris prefers bhp, as Chris pointed out yesterday when he is mapping on the rollers for 3hrs he can loose 10whp due to the tire getting hotter and hotter but it all works itself out when the bhp figure is calculated.

Our software actually meaures horsepower going up then measure it coming down.unlike some which just calculate a % on top of the whp figure.

Intrestingly enough when I overlayed Loui and Big Shows BHP figure they actually match line on line all the way to 6000 within 2.3 bhp, this is when Louis made 239whp 272bhp.

As for the reliability card that you played, Nathan on NAM has as he said previously on this board has over 30k on his RMW head been to 5 different dynos in 3 states and has probably 10 track days what I know off.
He's just picked up another 15ftlb swopping to Jans header / exhaust

Look forward to seeing you at Surrey better build an M45 combo to net 290 though

Nathan typically has a track day a month sometimes more. You can add another dyno to the cause as he just tuned on Church's automotive out here. He will be at the track again this weekend so we can't wait to hear the differences in time. I keep seeing Roland making excuses why he won't show up at the dyno...... I guess it's one way to market your s/c products now that he has competition. So now Karl , MR GTT270 himself is bailing to go turbo. Makes me think his parts weren't as fast as he thought they were. I guess we will never know as he isn't going to dyno them in the form he had.

I wonder if ANY GTT 270 will EVER step up to the dyno to show their guts? Lastly the oil pump thingy........ we have been reving to 8k without oil pump failures. The only ones we have seen fail are ones with crank pulleys.

[NeuroBeaker]

Quote: Originally Posted by Revolution Mini Works (original)

Lastly the oil pump thingy........ we have been reving to 8k without oil pump failures. The only ones we have seen fail are ones with crank pulleys.

Our of curiosity, how long does an engine last at 8,000 rpm? Do you need to make any safety modifications to allow it to do this?

All the best,
Andrew.

[Revolution Mini Works]

Quote: Originally Posted by ARCrawford (original)

Our of curiosity, how long does an engine last at 8,000 rpm? Do you need to make any safety modifications to allow it to do this?

All the best,
Andrew.

One car has close to 10k track miles , stock bottom end. As with anything you will have more wear and tear, it's part of racing. I don't know of many people who drive around on the street banging 8k daily. No need for it when you make the power we do.

We have tested the stock bottom end to 500whp so a 250whp car isn't much strain on the rods/crank

[MINIMANIAUK]

Our of curiosity, how long does an engine last at 8,000 rpm? Do you need to make any safety modifications to allow it to do this?

All the best,
Andrew.


There is no simple answer, so many components are exceeding their design criteria.
Heat,fatigue,stress,all increase with rpm ,there are "safety modifications" but they cost plenty!!!
increasing the loads and stresses in materials due rpm increases also has a double effect in that the heat is also increased at the same time and materials weaken with increase in temps until they fail or melt
for example the pistons are aluminium alloy ,aluminium melts at 660 degrees ,but weakens at a lower temp than that
If you look at a dyno graph you can see typically 40bhp /1000 rpm (the graph is a straight line ) so between 7000 and 8000 you would add 40 bhp ,but the engine is producing 3 times that to get 40 bhp at the crank the other 80 bhp is mostly heat.
Cranks can fail through mechanical failure.fatigue,bending,vibration,bearing failure thru poor lube,hot oil, thrust bearing failure,and balance
These are production engines and there will be variables between engines ,but the newer the engine the better and the less likelyhood of failure .
Makes me wonder sometimes that owners are so frightened of warranty issues they wait til the car has 60000 miles and THEN decide to pump up the power levels , Yes they are an inherently strong engine but one thrust washer fail and pop
I think most owners take this on board when tuning and accept that they cant afford the high end titanium cranks and rods etc and the risk/£ factor
A new short engine is £1300 ish so not the end of the world

[Damo]

How much is a Titanium crank just out of interest? lol