Which Turbo ?????
Discussion
Im looking to turbo charge an engine for a current project.
I have 2 of these engines sitting here in the workshop so this is the only way to go, another engine is not an option nor would any other engine suit this project.
Ok The stats are:
Vehicle Weight = 1000kg
Use = Fast Street, occasional track use
Manual Transmission, custom lightweight flywheel, ITB's, Aggressive Cam Schrick 264/264 Degree Duration.Custom Software and map.
Engine Code = BMW M70B50 300 BHP 5.0 V12 2 valve per cylinder (Head Flow Very Poor).
The compression ratio is 8.8:1, stroke is 75 mm (3.0 in) and bore is 84 mm (3.3 in).
I believe that all internals are strong enough as stock except for pistons. New ones on order specifically spec'd for forced induction.
Im looking for a good amount of power 550bhp minimum but it needs to be ready and available no lag, but not un-drivable wheels spinning everywhere etc. Progressive i think would be best way of describing it. Does this point toward single turbo?
What Turbo would you recommend? And would it be single or Twin turbo etc?
As the setup initially will be trial and error, im keen to keep costs down so ebay turbos etc that are from other vehicles would be ideal. Once im happy with the setup etc, we can spec the brand new all singing and dancing turbo.
thanks in advance.
I have 2 of these engines sitting here in the workshop so this is the only way to go, another engine is not an option nor would any other engine suit this project.
Ok The stats are:
Vehicle Weight = 1000kg
Use = Fast Street, occasional track use
Manual Transmission, custom lightweight flywheel, ITB's, Aggressive Cam Schrick 264/264 Degree Duration.Custom Software and map.
Engine Code = BMW M70B50 300 BHP 5.0 V12 2 valve per cylinder (Head Flow Very Poor).
The compression ratio is 8.8:1, stroke is 75 mm (3.0 in) and bore is 84 mm (3.3 in).
I believe that all internals are strong enough as stock except for pistons. New ones on order specifically spec'd for forced induction.
Im looking for a good amount of power 550bhp minimum but it needs to be ready and available no lag, but not un-drivable wheels spinning everywhere etc. Progressive i think would be best way of describing it. Does this point toward single turbo?
What Turbo would you recommend? And would it be single or Twin turbo etc?
As the setup initially will be trial and error, im keen to keep costs down so ebay turbos etc that are from other vehicles would be ideal. Once im happy with the setup etc, we can spec the brand new all singing and dancing turbo.
thanks in advance.
As it stands a new single turbo has been suggested borg warner turbo running in at £1400. Im just concerned with my lacking knowledge re speccing my system. I dont want lots of lag but I dont want it to be undriveable.
All that being said new turbos aren't essential. A good used pair from ebay would be fine. How do you spec them though?
All that being said new turbos aren't essential. A good used pair from ebay would be fine. How do you spec them though?
Edited by Mjpmark on Tuesday 29th October 23:12
The info given on the engine, including the ITB's are as the engine stands now.
A realistic re evaluation of the engine showed us that 500hp from a N/a M70b50 was far from realistic.
With turbos, the figure is certainly achievable and has been done many times.
This post was simply a way of trying to get more specific details on the turbos themselves. V12 as stated is simply the only engine for this project, at a relatively small cost of 1k to 1500 per engine the initial investment bares no reasoning to the continued use of the engine. It simply has to be this engine.
Ill keep you posted on the progression, Thanks Andy for all your info and Stevieturbo.
A realistic re evaluation of the engine showed us that 500hp from a N/a M70b50 was far from realistic.
With turbos, the figure is certainly achievable and has been done many times.
This post was simply a way of trying to get more specific details on the turbos themselves. V12 as stated is simply the only engine for this project, at a relatively small cost of 1k to 1500 per engine the initial investment bares no reasoning to the continued use of the engine. It simply has to be this engine.
Ill keep you posted on the progression, Thanks Andy for all your info and Stevieturbo.
Gents thank you for all the input, im keen to get many points of view on this install.
Im not defensive or dismissive on any suggestion, if i knew all the answers i wouldn't have had to ask on here. I'm please Ive had responses, and yes ill keep you updated on progress.
Once again thanks for the input.
Mark
Im not defensive or dismissive on any suggestion, if i knew all the answers i wouldn't have had to ask on here. I'm please Ive had responses, and yes ill keep you updated on progress.
Once again thanks for the input.
Mark
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