[Revolution Mini Works]

Quote: Originally Posted by Ant FR (original)

nothing like a good old rolling road read out to get the discussion going. And surrey seem to be the preferred choice for people on here too, so should be no conspiracy theories like we normaly get......lol

How do the new injectors get used fully without a change to the map. Surely they can only squirt what they are told to squirt ( that my layman term...lol) because even JCW cars that use the injectors have an uprated map on them.

Also what Cam has the ar got, is it one of these Schrik ones i keep reading about, seems strange to change the cam and not chaneg the head at the same time, was there a particular reason for this. i've always been told that the head is one of the worst areas of design in the MCS engine, and always been told that maximum benefit can be had here from doing the right mods.

ant.
you are right about the cylinder head being the biggest problem with our engine. Small valves, small ports and bad rocker geometry all add to the problem. We have spent quite some time re-designing the ports for maximum flow with maximum sized valves. What we have seen is tremendous gains in the power from our engines. We are the only people in the world that have broken 250whp with the stock blowers and no nitrous.

The car will adapt to 380cc injectors because there is enough fuel trim in the software to allow for it. As Paul said, it will probably make more power but safety is better with the 380s as injector duty cycle is key to long engine life. We will be mapping cars in the UK soon as I am becoming a vendor on Mini2 as soon as I finish this post.....

Here comes Revolution MINI Works

[Bhozar]

Quote: Originally Posted by Kumho Kid (original)

ant.
you are right about the cylinder head being the biggest problem with our engine. Small valves, small ports and bad rocker geometry all add to the problem. We have spent quite some time re-designing the ports for maximum flow with maximum sized valves. What we have seen is tremendous gains in the power from our engines. We are the only people in the world that have broken 250whp with the stock blowers and no nitrous.

The car will adapt to 380cc injectors because there is enough fuel trim in the software to allow for it. As Paul said, it will probably make more power but safety is better with the 380s as injector duty cycle is key to long engine life. We will be mapping cars in the UK soon as I am becoming a vendor on Mini2 as soon as I finish this post.....

Here comes Revolution MINI Works

Congrats on being a vendor...soon.

So, how about a redesigned head that is DOHC?

[Revolution Mini Works]

Quote: Originally Posted by Bhozar (original)

Congrats on being a vendor...soon.

So, how about a redesigned head that is DOHC?

much cheaper to buy a stroker engine

[Bhozar]

Quote: Originally Posted by Kumho Kid (original)

much cheaper to buy a stroker engine

Yeah.. but.... DOHC+Stroker+Rotrex? Yep, I want my cake and to eat it too!

Two Eskimos sitting in a kayak were chilly, but when they lit a fire in the craft, it sank, proving once and for all that you can't have your kayak and heat it too!

[Revolution Mini Works]

Quote: Originally Posted by Bhozar (original)

Yeah.. but.... DOHC+Stroker+Rotrex? Yep, I want my cake and to eat it too!

Two Eskimos sitting in a kayak were chilly, but when they lit a fire in the craft, it sank, proving once and for all that you can't have your kayak and heat it too!

are you prepared to write a $50k check to develop it?

[GARY GP]

jan are you coming to the uk! Great! but i need time to order my kit first will you pm me with the price for it.. thanks.

[Bhozar]

Quote: Originally Posted by Kumho Kid (original)

are you prepared to write a $50k check to develop it?

Ouch. I dont think you could ever make that $50k back with selling the mod after market. Oh well. I imagine doing a head and doing it DOHC from scratch would give the freedom to get the best from the engine. Then again, stroker and rotrex look okay to me.

[Revolution Mini Works]

Quote: Originally Posted by Bhozar (original)

Ouch. I dont think you could ever make that $50k back with selling the mod after market. Oh well. I imagine doing a head and doing it DOHC from scratch would give the freedom to get the best from the engine. Then again, stroker and rotrex look okay to me.

having a new head cast for the engine is quite expensive and then how many people will go through the trouble to buy them?

I think you see my point


most of the honda guys are impressed with what we have done with an archaeic engine

[Bhozar]

Quote: Originally Posted by Kumho Kid (original)

having a new head cast for the engine is quite expensive and then how many people will go through the trouble to buy them?

I think you see my point

most of the honda guys are impressed with what we have done with an archaeic engine

Aye, but one can dream, eh?

I think a lot of people from a lot of car communities are impressed by our little go-er.

[Damo]

Quote: Originally Posted by 1320autos (original)

Thats why we haven't published any of our un-independant dyno figures as we know how much stick we would of got for it.

The std injectors actually made more power than the 380 JCW on our dyno but they are on the borderline at that level.

This isn't a Shrick cam, most Shrick cams loose a little at the bottom then gains at the top, this one seems to gain all round as evident by the 30-70 improvement / progress.

You can fool the head with a cam, if you read any limited class rules where valve lift is limited you will appreciate how much hp these guys are making with things that shouldn't work, unfortunatley most people believe adverts. (NHRA Super Stock)

A head is the most trickest part but I'll let Kuhmo Kid and Roland tell you about there R&D and discoveries.

I didn't expect bigger injectors to give MORE power but to protect the engine top end more and lose less power with a pulley (if that makes sense).

How come the JCW Injectors lose power then? Aren't they the same make (Siemens) as the standard only bigger?

I upgraded the injectors to make sure my car didn't go BOOM!

[Paul Webster]

If you want to chase dyno numbers you can lean an engine out until you reach that ultimate number, thus the 330 on the dyno were probably in the 12.5 - 13-1 range very good for power and the engine might last a long time.
(when Hubie Fuh aka Fireballed M600 told me to smaller injectors in when we were chasing numbers I didn't believe him either)

The 380cc were put in as more as a safety margin plus the a/f is 12-1 dipping to 11.5s in some places.

We could tune the 380s to mid 240s at 6800 and I would guess over 250 with a raised rpm limit, but then again maybe not.

We are still experimenting to find more torque down below now Snowie has beaten me in the 30-70 test. I would also like to join Lee aka 2much in the 4s.

We might not acheive the above as we might have made the best we can ever make but then again....................................

[Revolution Mini Works]

Quote: Originally Posted by Damo (original)

I didn't expect bigger injectors to give MORE power but to protect the engine top end more and lose less power with a pulley (if that makes sense).

How come the JCW Injectors lose power then? Aren't they the same make (Siemens) as the standard only bigger?

I upgraded the injectors to make sure my car didn't go BOOM!

you did it for the right reasons!

we run custom 440cc injectors with our head and tune to make sure you get the most out of it

[Paul Webster]

Congrats on the name change Jan I mean Kuhmo I mean RMW

[Hyper Active]

Quote: Originally Posted by 1320autos (original)

I knew people would start asking me this, unfortunatley it seems you have a Friday result, but what year is your car and what mileage have you done and has your supercharger belt been changed?? It might be as simple as your belt is slipping.

I'm gutted that you were one of the ones where Charlie kicked the plug out. so no data.

Best thing to do if you're not happy with the result is to pop up and we'll do a compression and leakdown test and go from there.

Mine was made in June 05. It's coming up for 25k miles, and i don't believe the supercharger belt has ever been changed.

So can a Friday engine be turned into a Wednesday engine, is that possable ?.

[Paul Webster]

We willl have to see if it is possible.

[Damo]

I know of someone who had their car tuned and didn't get what was expected originaly and was told some cars are just slow. hence the Friday theory. However they were told to get a Adjustabe Vernier Cam Sprocket and this would likely help.

Link> THE GT TUNING PERFORMANCE PARTS DESIGN & PRICING POLICY

This was fitted and bobs your uncle the car was as powerful as predicted.

[Paul Webster]

Just found another 11ft lb all in the 30-70 rpm band, it repeated 240bhp 3 times though it was nosing over power wise a bit at the top in comparison to the combination what was at Surrey Rolling Roads.

Unfortunatley we changed two thing at once so now we have to try another a couple of combos to see which one is the gain or maybe it is a combo of both.

[Rigsey]

Quote: Originally Posted by 1320autos (original)

Just found another 11ft lb all in the 30-70 rpm band, it repeated 240bhp 3 times though it was nosing over power wise a bit at the top in comparison to the combination what was at Surrey Rolling Roads.

Unfortunatley we changed two thing at once so now we have to try another a couple of combos to see which one is the gain or maybe it is a combo of both.

What were the two things you changed?

[MINI-Morgan]

Quote: Originally Posted by Rigsey (original)

What were the two things you changed?

Agreed.... do tell? hehe

[Paul Webster]

Quote: Originally Posted by MINI-Morgan (original)

Agreed.... do tell? hehe

You obviously have memory loss from Saturday at the pub or was it all that banger racing effected your brain.