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Topic: what easy / cheap mods to BOA 24v (Read 1095 times) |
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myrs200
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what easy / cheap mods to BOA 24v
« on: Sep 8th, 2009, 6:21pm » |
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Hi
I have purchased a BOA 24v motor to fit in my TVR 
apart from removing the power steering and aircon pumps and the viscous fan what other mods are/should be done?
The exhaust will not have cats but have not decided on dia size - car to be used in competition so need to be less than 100dB
I have posted in wanted for a 2.0 ltr diff
what safe (ish)max revs for this motor?
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Highlander
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Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: what easy / cheap mods to BOA 24v
« Reply #1 on: Sep 8th, 2009, 6:27pm » |
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Hi and welcome to the site 
The BOA was fitted to the Granada -94
The Scorpio 95 - 98 which this site is dedicated to is fitted with the BOB 24v
There are a few guys on here with BOA experience but you may get more luck here :
http://www.granada-and-scorpio-online.com/
This is a good site for BOA mods info :
http://www.granada-and-scorpio-online.com/
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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pinto
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TD04 on a galaxy manifold ? whooooooosh !
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Re: what easy / cheap mods to BOA 24v
« Reply #2 on: Sep 9th, 2009, 8:00pm » |
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BOA motor has a few quick and reletively cheap modifications you can do - but anything more serious will cost you £££££'s as there arent many aftermarkets parts out there for them.
Start with a decent exhaust and cone filter - but make sure you pipe cold air to it or its a total waste of time. Next up is to replace the standard scorp injectors with those from the 2.5 Vectra - better spray pattern and more efficient, hence give a few more BHP. There are ECU chips available too - usually give a nice torque boost (up to +20%) but not a lot in the BHP area. Thats about all you can do in the vein of bolt on stuff.
You can use the 4 camshafts from the later BOB engine, which have a more aggressive profile than the early cams and will equate to fast road cams in a BOA - this step isnt to be considered lightly tho, as you'll be pulling about the timing chain area of the engine and you can quite easily open up a can of worms with worn chains and broken guides that are pretty much unavailable now from anywhere - if you can find a set of them, expect to pay in the region of £400 + for them !!
All the above mods should see you with 220-230 BHP and a nice lump of torque on the stock motor
After this, you're talking about moving to triple DCNF carbs, or looking at turbocharging (with all the uprated internals involved such as forged rods and pistons, etc) - BIG money.... but people have managed to take the BOA to 600 BHP +........
BOA is stronger than the normal cologne engine - but dont exceed 6400 rpm or you'll hear expensive and fatal noises 
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myrs200
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Re: what easy / cheap mods to BOA 24v
« Reply #3 on: Sep 9th, 2009, 11:23pm » |
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so 6000 is a good safe max rpm limit rather than 6500
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pinto
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TD04 on a galaxy manifold ? whooooooosh !
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Re: what easy / cheap mods to BOA 24v
« Reply #4 on: Sep 11th, 2009, 11:24pm » |
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6.2K is regarded as a safe limit on the BOA
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einherjar
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24v Ultima
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Re: what easy / cheap mods to BOA 24v
« Reply #5 on: Sep 30th, 2009, 10:24am » |
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on Sep 9th, 2009, 8:00pm, pinto wrote:| Next up is to replace the standard scorp injectors with those from the 2.5 Vectra - better spray pattern and more efficient, hence give a few more BHP. |
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Is that injectors will fit in my 2.9 cossy? And will be work properly, of course
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pinto
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TD04 on a galaxy manifold ? whooooooosh !
Posts: 474
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Re: what easy / cheap mods to BOA 24v
« Reply #6 on: Oct 3rd, 2009, 7:00am » |
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Vectra injectors will only work in the BOA - the BOB use a completely different design so the vectra ones wont fit.
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