Ultima GTR V12

[deleteall]

OOPS! Check out www.westechperformance.com/pages/Tech_Library/Popular_Engine_Specs/dimensions.html

[alfasteve]

Hi Thanks
this helps a lot so to be corect the Ultima uses a big block wich means this engine is even wider and longer than the V12

now i only have to solve the problem with the adaptor plate i will make one from the original gearbox
but than will have a machine shop make a flyweel on wich i conect the clutch unit

brgds

steve

quote:
OOPS! Check out www.westechperformance.com/pages/Tech_Library/Popular_Engine_Specs/dimensions.html

[ultimapaul]

Nope, the Ultima uses the SMALL block !!!!

[alfasteve]

Thanks paul

Cheers

[alfasteve]

thanks

Found the dimensions

[Miguel]

Hi all,

I'm pretty new here and enjoy reading all your posts. I have a couple of questions for alfasteve and ultimaandy.

I recall reading that the weights of the BMW V12 and an all iron, gen. 1 SB Chevy are 240kg and 575lbs (about 261kg), respectively. Obviously, the discrepancy here is that those weights are for fully dressed engines, with their complete intake manifolds, cast iron exhaust manifolds, and all accessories. I was just wondering what state of dress your BMW and Chevy engines were in to weigh what they did.

Just the long block without any manifolds? I'm assuming that neither engine was weighed with any accessories. Also, does your Chevy have aluminum or iron heads? TIA

Miguel

[ultimaandy]

quote:
Hi all,

I'm pretty new here and enjoy reading all your posts. I have a couple of questions for alfasteve and ultimaandy.

I recall reading that the weights of the BMW V12 and an all iron, gen. 1 SB Chevy are 240kg and 575lbs (about 261kg), respectively. Obviously, the discrepancy here is that those weights are for fully dressed engines, with their complete intake manifolds, cast iron exhaust manifolds, and all accessories. I was just wondering what state of dress your BMW and Chevy engines were in to weigh what they did.

Just the long block without any manifolds? I'm assuming that neither engine was weighed with any accessories. Also, does your Chevy have aluminum or iron heads? TIA

Miguel

On the shipping document said the weight was 215kgs.

This was complete, alternator, alloy heads and alloy intake manifolds & carb. It also included the crate that the engine came on!

There not as heavy as I was lead to believe.

[Miguel]

Thanks for your reply, Andy. The alloy heads on a SB Chevy save a minimum of 20kg. Alloy intakes also save some useful pounds. It's possible that modern alternators and other accessories are significantly lighter than those of the old days. Maybe the engine weights I'd read about before included AC compressor and PS pump. Are you saying that they forgot to include your power steering pump? ;-) Even with all that, it still sounds lighter than I would've guessed. Good news, then.

[alfasteve]

Hi Miquel

Thanks for this nice story the V12 is not that heavy
the 240 Kg is including the converter from the automatic gearbox wich is almost 30 kg and all the things like a heavy alternator i will use a small light unit from Nipondenso
and also the intake unit wich is aprox 15 Kg will be changed
and we will tune the engine to a figer close or hopefuly over the 500 Bhp mark

quote:
Thanks for your reply, Andy. The alloy heads on a SB Chevy save a minimum of 20kg. Alloy intakes also save some useful pounds. It's possible that modern alternators and other accessories are significantly lighter than those of the old days. Maybe the engine weights I'd read about before included AC compressor and PS pump. Are you saying that they forgot to include your power steering pump? ;-) Even with all that, it still sounds lighter than I would've guessed. Good news, then.

[Miguel]

Thanks, Steve. So a lot of that weight comes from the accessories and other stuff. That's good to know. Please keep us posted as to what's happening as far as tuning the BMW V12. Good luck.

[ultiman]

quote:



Hi so but i already got a V12 i try to compare the v12 with a Chevy
i need the dimensions for a Chevy V8 to compare it with
the V12 so i can know how far the engine must move forward in order to keep the gearbox in the right place
also the space in front of the puley and the firewal

steve

Steve
Have you phoned the factory? They are very helpful. If you are interested in a car they have every incentive to give you the time and attention you need. There may be other issues to consider beyond the ones you have mentioned already. Also it is possible they may have experience of what you are attempting to do. Try [phone].

[alfasteve]

Hi Ultimaman

Thanks did have email contact with Ted from the factory
they have been very helpful and now just want to finish the engine with as much as power as possible (Reliably) and also mate the engine with the box that to me is the biggest problem
than it is only for me to get started next summer hopefully
i still have to sell my curent Race car first or i will be single

aboud the engine mods
my engine builder who is an engineer Highly rated on F1 level of skil
will decine the Camshaft exhoust manifold and piston
also the dry sump wich i am not 100 % shure about yet
and also the inlet manifold with 12 Trotles strait upwards hope to see enough power in this lovely engine
the cilinders is quit a expensive sys BMW used
the block is full Alluminum and the cylinders also with a chromed and ?nikasil style wall

but if there will be anyone out there interested in also such an enggine it is cheeper to get 24 pistons than just 12 also the Camshaft will be better to get 2 sets instead of one
also the mod valve train wich is hydroulique but will be machinical just to be quicker on those high revs

quote:

quote:



Hi so but i already got a V12 i try to compare the v12 with a Chevy
i need the dimensions for a Chevy V8 to compare it with
the V12 so i can know how far the engine must move forward in order to keep the gearbox in the right place
also the space in front of the puley and the firewal

steve

Steve
Have you phoned the factory? They are very helpful. If you are interested in a car they have every incentive to give you the time and attention you need. There may be other issues to consider beyond the ones you have mentioned already. Also it is possible they may have experience of what you are attempting to do. Try [phone].

[bmwtuner]

as for tunning the m70 bmw v12, i have a lot of information, u can get well over 500bhp normaly aspirated. 560-570 in the limit before forced induction is needed.

if you need some info, drop me a line at [e-mail]

hope the build goes well, i will be very interested if you manage it. I have come across a few people who do a g50 tranaxle adapet for this engine aswell, i will look them out and post

[klein]

Just a little light hearted reply. If you want a V-12 for your ultima check out www.falconerengines.com they build a perfectly legal engine for street rods. It puts out over 700hp in street trim. If size is an issue? check out www.conleyprecision.com they have a 1/4 scale 427 with a supercharger. It looks just like stigs engine only it can fit in a large salad bowl. Couldn't imagine starting it indoors though, my wife would freak.

[jay esterer]

I built an ultima gtr with a bmw v12 in it
it fit in the stock frame,is dry sumped and is 3 inches
lower than the wet sump chev
engine, is no longer than the sb chev,i use a 6 sp 996 box
engine is 450 lb
has programable ecu
i will send you pictures if you like
i also made many other changes to the gtr
more info on that if you like also
the pics will say everything
thanks

[GTRmannen]

Im very intresed in all mods you done,we are going the same way...please send pics and info

[ULTIMALOVER]

Is there a way to show the pics on this forum? I would like to see that!

[alfasteve]

Dear All

Its nice to see that there are more people interested in the V12 route.

an update on my progress :
i have 2 V 12 engines at the moment a 5.0 and 5.7 displacement engine , will use the bigger one
and a Motec M8 management system will control this all
with a Getrag 6 spd box with LSD

and the brakes from the Porsche 996 GT2 meaning
4 Brembo 6 pot callipers and 380 x 32 MM discs

will need to develop or find someone who allready did
develop a adaptorplate/Flywheel/Clutch/Exhaust sys

the engine will be at the builder around April where we hope to see 500 to 550 reliable normal asp Hp

[GTRmannen]

alfasteve said: Dear All

Its nice to see that there are more people interested in the V12 route.

an update on my progress :
i have 2 V 12 engines at the moment a 5.0 and 5.7 displacement engine , will use the bigger one
and a Motec M8 management system will control this all
with a Getrag 6 spd box with LSD

and the brakes from the Porsche 996 GT2 meaning
4 Brembo 6 pot callipers and 380 x 32 MM discs

will need to develop or find someone who allready did
develop a adaptorplate/Flywheel/Clutch/Exhaust sys

the engine will be at the builder around April where we hope to see 500 to 550 reliable normal asp Hp

Are you going to run 19" becouse 380mm dics will not fit 18"

[alfasteve]

Hi

I just want to use 18 Inch wheels the Porsche GT2 uses
18 Inch wheels too

GTRmannen said:

alfasteve said: Dear All

Its nice to see that there are more people interested in the V12 route.

an update on my progress :
i have 2 V 12 engines at the moment a 5.0 and 5.7 displacement engine , will use the bigger one
and a Motec M8 management system will control this all
with a Getrag 6 spd box with LSD

and the brakes from the Porsche 996 GT2 meaning
4 Brembo 6 pot callipers and 380 x 32 MM discs

will need to develop or find someone who allready did
develop a adaptorplate/Flywheel/Clutch/Exhaust sys

the engine will be at the builder around April where we hope to see 500 to 550 reliable normal asp Hp

Are you going to run 19" becouse 380mm dics will not fit 18"