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940 Wagon Project

Roger88

New member
Joined
Jun 19, 2019
Hi all!,

I'm Roger and from the UK, I also created a thread on volvoforums.org.uk pretty much the same as I am posting here but I thought I should introduce myself and ask you guys too.

I'm new here but always had a love for Volvos, I have just recently bought a 1998 Volvo 940 Wagon LPT (B230FK), I am presuming it has the m90 box with the revised 3rd gear syncro but I am not sure until I get a better look.

I thought I should come here and ask for advice with the direction I am heading with this Volvo, I am aiming for big power and would be good to get some info on recommended setups and items I will need for the build.

The aim is for 500-600bhp so the engine will be getting pulled out and forged rods and pistons with ported 530 head and double valve springs.

Any advice on if I should go aftermarket intake plenum would be helpful, and if anyone knows of a reasonable priced exhaust manifold with T3 fitment would be appreciated as I am struggling a bit to find a selection of exhaust manifolds.

I already have a Link G4 extreme ecu for using on the car so that side is sorted so far.

I will leave it there for now but if anyone has experience or a nice recipe I should aim for and just any helpful information would be much appreciated!.

EDIT: I forgot to say I know about reinforcing the rear frame to prevent twisting and also any information on a good clutch setup will be brill', so far I think it will be a twin plate setup but if anyone has better information that will be a big thumbs up.

Cheers

Roger88
 
If those are real goals yes, you'll want a plenum. I've back-to-backed a stock b230 intake and a plenum and the difference above 4500rpm is significant. This was with a high flowing 530 head (48/40 valves, heavy port work), tube header blah blah.
 
If those are real goals yes, you'll want a plenum. I've back-to-backed a stock b230 intake and a plenum and the difference above 4500rpm is significant. This was with a high flowing 530 head (48/40 valves, heavy port work), tube header blah blah.

Thanks for the info, yeah 500-600bhp is a goal I have in mind for this car, I think she deserves it being a lovely shell, being from the UK I can find the plenum but I am still on the hunt for a tube exhaust manifold, I am hoping I will find a swedish one for a good price but time will tell.

When you mean 48/40 valves I am presuming its 48 on the intake and 40 for the exhaust?,

Any help is all appreciated guys.

Cheers

Roger88
 
Thanks for the info, yeah 500-600bhp is a goal I have in mind for this car, I think she deserves it being a lovely shell, being from the UK I can find the plenum but I am still on the hunt for a tube exhaust manifold, I am hoping I will find a swedish one for a good price but time will tell.

When you mean 48/40 valves I am presuming its 48 on the intake and 40 for the exhaust?,

Any help is all appreciated guys.

Cheers

Roger88

you've got it. With a head that can flow and a decent cam the stock intake can't keep up at higher rpm.
 
you've got it. With a head that can flow and a decent cam the stock intake can't keep up at higher rpm.

Cool cheers for the help, obviously I have the 530 head but is that still workable with porting, cam and valves opposed to the 531 head I sometimes hear about?

Would you or anyone here have a recommendation on a clutch setup which would be kind-of on the "save money" side?, I know twin plate is probably the way to go but if there is a bit more of a cheaper way I am all ears, again I don't mind if it boils down to having to shell out on a twin plate setup.

Cheers

Roger88
 
500 to 600hp?

When do you start the LS swap?

No LS here shamefully, but realistically, is 500-600bhp do'able from the late b230 motor? I half know the crank is being put near its limit at that point.

Any help is always appreciated.

Cheers

Roger88
 
No. 500hp is a pipe dream with a Volvo red block. I think that the limit of what a red block can do is 300hp. That would take a very good turbo, a 4 valve head with very good cams, and all the hopes and dreams you can muster. 300hp is twice what your car makes now, and there is a limit to what you can do with only 2.3 liters and only 4 cyls. Nothing to do with the crank, it's about the basics of the engine.

If you need 500 to 600 hp, you will have to move to a V-8.
 
No. 500hp is a pipe dream with a Volvo red block. I think that the limit of what a red block can do is 300hp. That would take a very good turbo, a 4 valve head with very good cams, and all the hopes and dreams you can muster. 300hp is twice what your car makes now, and there is a limit to what you can do with only 2.3 liters and only 4 cyls. Nothing to do with the crank, it's about the basics of the engine.

If you need 500 to 600 hp, you will have to move to a V-8.

Dont listen to this guy
 
I'm planning a 500 whp 2.5 stroker myself. I do scca racing. I just posted a build question thread to zero in kn a few more details (turbo selection etc)

There are guys ( lots of em ) making 300 whp + on lh2.4.
 
I don't have much to offer on clutch with an m90 box (can m90's really take that kind of power?), but when I was buying my clutch I did talk a bit with TTV. One of their billet flywheels and a Sachs 765 pressure plate might be a good start.
 
The m90 could probably hold 500 hp if its had the welded 3rd gear mod and a good clutch. But for how long? At that point you're looking at using the Nissan cd0009.
 
Dont listen to this guy

I did think that "B230 only good for 300bhp" was a bit of a :wtf: haha

I'm planning a 500 whp 2.5 stroker myself. I do scca racing. I just posted a build question thread to zero in kn a few more details (turbo selection etc)

There are guys ( lots of em ) making 300 whp + on lh2.4.

I have seen a penta crank for sale I admit, would the engine still liked to be revved with that crank? also I guess you would have to use different length rods or different height sized pistons?

I don't have much to offer on clutch with an m90 box (can m90's really take that kind of power?), but when I was buying my clutch I did talk a bit with TTV. One of their billet flywheels and a Sachs 765 pressure plate might be a good start.

Cheers for the info, I read somewhere they can take quite a bit of power but have to be a bit gentle with the gear changes especially third gear, would be good to find more people using this box and what power they have got away with/how long it lasted.

The m90 could probably hold 500 hp if its had the welded 3rd gear mod and a good clutch. But for how long? At that point you're looking at using the Nissan cd0009.

Yeah I did see about the 3rd gear mod, my 940 is a 1998 model so supposedly it might have the M90L2, but will not know for definite until I have a better look at the car.

I just looked on that thread about the cd0009 box, looks like a more logical solution long term lol, I admit I don't want to fix/change boxes alot on the 940 once done,

But I have noticed a few vids of Swedish Volvos running the BMW ZF box, and I know I could get a bellhousing adapter kit with flywheel and clutch from ABC Clutches

http://www.abc-clutch.com/portfolio/volvo-b200b230xx-bmw-gearbox-adapter-kit

Would you or any of you guys know if this would be a better route opposed to the CD0009 box swap?


Cheers for all the help again guys!

Roger88
 
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