Whos going Vmax?
Turbo Mini Forums

Anyone decided if they are gonna try a Vmax head? or already have done?! been looking at the "monster" head, but im thinking now to go for the everday turbo head for around ?350, think should be enough to see a good 150bhp

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

I've had a V-Max head for a few years now. It was from one of their 140hp Turbo engine kits they used to do many years ago............. It WAS a really good head, but unfortunatly met an untimely end last year. RIP.
There's something special for this year.

Phil.

Edited by Turbo Phil on 27th Jan, 2004.

WWW.TURBO-MINI.COM

What's that then Phil? A 1000 mile service?

whats the 1000 mile service all about then dave? lol

you ever tried a Vamx head dave?

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

No, but i've seen the heads and spoken to stuart a few times. They are probably the finest heads i've seen however, although i don't fully understand the benefits in very large ports on inlet or exhaust on a turbo application, especially when you bolt the standard exhaust manifold up to ports with a huge area.

I personally would go for the intermediate head you discussed, but ask about valve size/type options - basically a special.

Also, YOU alone need to decide exactly what CR you are going to run and hence what chamber volume is required. Also consider what fuel you are going to run....
Going too low means you can run more boost, but off boost performance is greatly reduced, as well as spool-up time and other minor points like drivability and economy!

Edited by turbodave16v on 28th Jan, 2004.

yeah thats right, i dont want to take the CR down too low, as the car will be certainly used almost daily, so i want something thats useable. when i have saved up i will speak to stuart and get a head that is worked to suit my engine set up and what i would like out of it etc. i spoke him him before about his 4sc 5th helical gearbox and he was very helpful then

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

when i spoke to Stuart a few months back, he said the intermediate head is good for about 16 or 17 Psi, and if the engine is up to scratch, that should be around 150Hp i would have thought.

sounds good enough for what im looking for, cheers

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

I am having the everday turbo head with a little more porting just to make sure the 150 is possible

Just thought i'd let you have a look at a head VMax did for me a while back.




Karl.

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

looks very nice, did it go well?

A-series power! 1972|1310|T3 turbo|Omega pistons|Cantre main strap|Orange clutch diaphragm|AP race plate|Comp pressure plate|Lightened steel flywheel|13-row oil cooler|Vernier duplex timing gear|Phase 2 Piper cam|Green air filter|Hi boost carb needle/spring|2"Stainless exhaust|3"Play mini stainless rear box|Jack Knight s/c 4spd gearbox|Jack Knight s/c drop gears|Silicon coolant hoses|Lumenition HT leads|GAZ lowered height shocks all round|Steel flip-front|Rear safety devices cage|Group 5 arches|6x12 deep dish Minilites|Surf blue/Old english white|

the space between inlet and exhaust valve sem to be very tight, .
which are the valve size?
fab

35 / 32 i seem to recall with a 33cc chamber.
And it went well for the few months that i had it and i found out later off the new owner that it cracked but where and why i'm not sure.

Karl.

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

that's the trouble with big valves, i has a 37.5 mm and 31.5mm head and it cracked a few times, (not from Vmax though) don't want to say any thing bad about them.

Best 1/4 mile 13.2 seconds @116 mph
First 5 port miniturbo to make over 200 bhp on a carb?
First 5 port miniturbo to make over 200 bhp on Injection?

http://www.mattwoodsphotography.com

Interesting shape though, going back a few years everyone was going silly about removing the beak that glowed red in the chamber. Now there?s similar beak next to the plug. I wonder why ???

I have always left some of the beak there but cut it back a lot. The kidney shape was the main thing in weslake heads, swirl and fasts burn characteristics. In fact, big US aftermarket head companies are now seing the light and make the chambers smaller vs. kidney shaped. In addition, the head (and chamber) is angled and it gives even more poke.

This is just my reasoning but I might try two heads one day to see how much difference the beak in the head might have compared to beak-less version.

Jukka

Jukka, I would be very interested to see these results. If your willing to spend the time grinding heads to check this, I'll post some heads to you. Drop me an email if interested

Team Racing

Thanks Jim,

I don?t exactly love cutting the heads nor does my wife. Spending all evenings in the basement does not meet her idea about me taking care of the kids...

I will first do some "research" with my Minor. Due to legal matters it needs to be retain the std 92 hp Land Rover V8 engine that I rebuilt and fitted. I have some fresh parts like performance cam, new intake manifold etc. Also the std type carbs needs to stay so I?ll try how much power I can get with a new cam, but stock induction, then with a new intake manifold + SU carbs and finally ditch the SU?s and fit a Holley carb. All this funny stuff and still retain the official 92 hp... Tough call, wouldn?t you say ?

Jukka

Sounds like a good challenge to me Jukka!
Does this mean you have to retain the stock headers aswell?
I know where there are some SD1 Vitesse ones if you're interested...

Nope,

as surprising as it sounds there are no exhaust manifolds available that were designed for V8 Minor !!! Standard items did not fit (due to my choice of front suspension) soI fabricated a set of tubular manifolds. Sort of unequal length 4-1 design (with 1,5" primaries with 2" dual system) since the space did not allow any equal length stuff.

As for hp figures, I am currently at 175 hp+ but with new toys the 240 hp should not be difficult.

As for that legal 92 hp figure, I still have it, only at 2500 some rpm... Well, Land Rover never stated at which revs... nor did I.

Jukka

Jukka, how old are your kids, why not get them to grind the heads! Problem solved!

Team Racing

My son is 5 years, he likes to spend some time with me downstairs in the garage but most of my time is spent checking that he does not do anything suspicious. Lately he?s been practising with Makita cordless drill on wooden blocks but soon he?ll try his luck with various engine parts laying around...

Daughter is 2,5 years old and luckily only carries my tools around the garage.

the 2 year old, must hace nice small hands, ideal for doing up the exhaust clamp on the turbo.

Team Racing

Yes, but if you consider that she is as patient as her mother... forget it ! I have always wondered where all my excellent genes have disappeared from my kids... they only seem to have genes from their mother...

Seriously, I have already fixed the front suspension of Minor, changed the cam and half of the valve springs. Rest of the springs will be done today. Naturally the Kent springs that I had did not match the cam, they were too close to coil bind to make me happy so I fitted another set (Kent springs for Ford V6) that had less coils and a lot stiffer. I also checked the used std springs and they were pure crap !!!

So, maybe I can do some turbo stuff before the snow melts. BTW, I have drawn an autocad file of Dellorto idle jet holders and emulsion tubes. I borrowed and measured all that local Dellorto dealer had in stock. If someone wants to have the file just let me know.

Jukka