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Old 06-20-2017, 07:50 AM   #1
benbull
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Thumbs up Fun Volvo 940 Rally project...

A friend and I have just purchased this volvo 940 2.3t (think its the B230fk).
We're driving it to the Nurburgring in Germany (from the UK) in September for a friends stag do.

Its had no performance upgrades, so we were thinking of doing some work! Thoughts are...

Lowering
Exhaust (more noise required!)
Engine/turbo tweaks

This is all on a budget, and for a good laugh! Would appreciate some advice/thoughts!

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Old 06-20-2017, 08:27 AM   #2
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Looks like a fun project! The cheapest way to get a little more out of it would be to get a manual boost controller (for the turbo) and turn it up a couple more psi. Make sure you have a proper boost gauge though so you can keep track of the psi. Keep us updated on the progress.
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Old 06-20-2017, 11:35 AM   #3
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Quote:
Originally Posted by benbull View Post
Lowering
Angle grinder, spring compressors. Cut a coil off the front and rear. You then be the same height as the 'Sport' model and no risk of them dropping out.

Quote:
Originally Posted by benbull View Post
Exhaust (more noise required!)
Remove everything after the cat. Add a 90 degree bend that exits out the side.


Quote:
Originally Posted by benbull View Post
Engine/turbo tweaks
MBC as mentioned by jakemness (aim for about 1bar), plus search on here for airbox modifications (basically; remove foam and open up the cold air inlet part).

For the Nurburgring I'd look at getting some decent brake pads fitted. At the very least put some new standard ones in to try and prevent them overheating.

Have fun. Take pictures.
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Old 06-21-2017, 05:39 PM   #4
benbull
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Great, all things we'll definitely get sorted! Thanks!
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Old 06-21-2017, 05:50 PM   #5
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What kind of fog lights there and do you have any pictures of how they are mounted?
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Old 06-22-2017, 05:53 AM   #6
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What kind of fog lights there and do you have any pictures of how they are mounted?
Collecting it tonight, so will let you know..
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Old 06-22-2017, 08:46 PM   #7
classicswede
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rally car wants to be reasoably hgh but track car can be low
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Old 06-23-2017, 07:30 AM   #8
p18002.5t
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Get hold of some bosch green injectors and a 960 3"MAF and get the fuel ecu chipped, then get a 3" downpipe and exhaust.
The cheapest way to increase boost is to shorten the wastgate rod.

Good luck and have fun
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Old 06-29-2017, 07:37 AM   #9
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The cheapest way to increase boost is to shorten the wastgate rod.
the stock wastegate actuator on a B230FK is not adjustable. But you could add an additional spring to keep the wastegate shut just that little bit longer. That will raise boost.
Or find some other stiffer actuator and make that work.
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Old 07-03-2017, 11:31 AM   #10
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We've fitted a manual boost controller and gauge, running 10psi..ish.
It already had a side-exit exhaust, but we really want to lower it, so will probably have to run that back to the rear, as it will hit otherwise.
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Old 07-03-2017, 01:45 PM   #11
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Camber and caster mod + 960 subframe braces will greatly improve the front grip and handling of your car.
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Old 07-05-2017, 06:10 AM   #12
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We want to fit a dump valve.. purely for the noise/laughs...
I'm wondering if the area I have circled in yellow is a recirculating valve of some kind, and can be replaced with the dump valve, or have I got that completely wrong and its something else that needs to remain!? ...

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Old 07-05-2017, 06:50 AM   #13
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That's your idle control valve, you'll want to leave that right where it is!
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Unique for sure.
I don't think anyone is going to tell you it looks bad.
Kinda can't go wrong under the hood.
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Old 07-05-2017, 07:09 AM   #14
benbull
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ah! indeed...

can we 'T-off' the pipe circled red? Or somewhere better to pop her?
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Old 07-05-2017, 01:58 PM   #15
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Should have a Mitsubishi turbo and I think you can use the srt4 bov with that, used to be cheap. Might mess with how the engine runs though, no experience so not sure.
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Old 07-13-2017, 06:14 AM   #16
benbull
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Should have a Mitsubishi turbo and I think you can use the srt4 bov with that, used to be cheap. Might mess with how the engine runs though, no experience so not sure.
I see that attaches directly to the turbo? and actually tricky to get hold of.
We've been given a blitz dump valve from a friend, is it ok to plumb that in somewhere on the intake pipe? Or is there essentially already one fitted to the turbo... and this will cause issues?

Cheers
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Old 07-13-2017, 09:47 AM   #17
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Yes. Issues.
Fitting a dump valve tends to make the engine stall every time you dip the clutch. This becomes very tiresome very quickly.
The problem is metered air exiting the system and causing a rich mixture.

The car already has a 'dump' valve in the form of a recirculating compressor bypass valve attached to the side of the turbocharger itself. This puts the metered air back into the system and thus avoids the issues.

If all you want is more noise then take the airbox off and replace it with a open cone filter. But be aware that you'll probably lose power as the Volvo airbox is very well designed.
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Old 07-13-2017, 10:05 AM   #18
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Quote:
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If all you want is more noise then take the airbox off and replace it with a open cone filter. But be aware that you'll probably lose power as the Volvo airbox is very well designed.
If you are looking for BOV sounds, This is the best way to do it. I love the way the Mitsubishi Recirc valves sound!
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Old 07-18-2017, 08:09 AM   #19
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ok.. cheers all.. will leave that all as it is, and yes, just stuck a cone on it... despite the slight performance loss, I doubt we'll really notice!

..does sound good!
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