I have an 84 240. Planning to Turbo and make some decent numbers. Wondering what mass airflow I can use to upgrade. I need a new one as it is because the one I have somehow actually melted in one spot. Not sure how that works.
I tried to search for maf upgrades and such and had no luck. Think my 89 has bad maf also and may encounter a smaller conservative but peppy setup.
Any help is appreciated.

 

problems with the mass air flow sensor is common to the 240 series.. damaged or contaminated MAF sensor can possibly cause a wide range of various vehicle drivability problems such as stalling, especially when the engine is cold, misfiring, poor acceleration, etc. But the thing is, there is no kind of upgrade or the like. So I guess it is best if you just choose a brand that's a best replacement for the broken MAF you have there.

 

are you planning to turbo a no turbo engine? B23? I would NOT do that unless your motor has REAL low compression...you will blow it up. The B21FT is a low compression motor that they have turbo charged...Where a non turbo B23 will have say an average of 150-190PSI a turbo motor will have 100-120psi or seam like a bad motor...if I were you,I would replace your motor with a B21FT set up or even better a B23FT(740/760/940 Turbo cars) Anyway that's my opinion take it or leave it...also on behalf of the MAF 84 MAF's sucked...I would only replace with a new or rebuilt Bosch..Programma sucks...

 

If you are planning to bolt a turbocharger on your engine, I think you'll be a lot happier if you find an B21FT or B23FT and swap it in. Engine swaps in Volvos are much easier than other cars of the era.

 

Haven't compression tested the 84, but I'm fairly certain the 89 is the 10.3:1 or somewhere about. It read 190-195Psi. I want to check the 84 tonight. I will probably go with aftermarket fuel/ign setup but will not swap the engine until it is necessary. Call me stubborn, all fair. But replacement of something that is not broken is not likely either. Does anyone make rotating assembly for 240's? I'd like to build something stroked and lower the compression down the road. I'm used to building Honda engine so higher comp Turbo engine is easy to keep together. But Honda parts fit Honda engines, most parts are fairly interchangeable.

 

Haven't compression tested the 84, but I'm fairly certain the 89 is the 10.3:1 or somewhere about. It read 190-195Psi. I want to check the 84 tonight. I will probably go with aftermarket fuel/ign setup but will not swap the engine until it is necessary. Call me stubborn, all fair. But replacement of something that is not broken is not likely either. Does anyone make rotating assembly for 240's? I'd like to build something stroked and lower the compression down the road. I'm used to building Honda engine so higher comp Turbo engine is easy to keep together. But Honda parts fit Honda engines, most parts are fairly interchangeable.

 

If you LH 2.4 you could use the 3"mar off a 960.

Aftermarket cranks and rods and pistons, check out RSI: http://r-sportinternational.com/

 

Wow...some stuff here really needs to be ironed out. There is nothing wrong with +T'ing an n/a motor. You will just have to keep the boost modest...6-9 p.s.i. Yes, it's a higher compression motor with flat top pistons instead of dished. The real issue is your B23 is LH2.0 and uses an 002 AMM. To turbo the car, you'd need to either convert to LH2.2 or go to an MSnS setup for fueling. The turbo cars had different fueling maps in their ecu's. Using he stock LH2.0 ecu is sure fire engine death. There were no turbo LH2.0s so you see the issue. For instance, on my 89 245 I was able to use an ecu and icu from a 940T car as they were both LH2.4. In 84 and 85, turbo 240's were still KJet B21's. The 84 760T was LH2.1 and in 85 went to LH2.2.
If it were my car, I'd pull the motor and get a 93-94 turbo motor that has the bigger 13mm rods, proper pistons and get the complete engine harness from a 86-88 240. Then get the ecu and icu from a 85-89 740T. That will get you set up w/ LH2.2
I'm not a big fan of +T'd motors but it is done quite often. As long as you are careful with the boost, you'll be fine. As I said, the real issue is getting proper fueling and spark.

 

Sorry I still disagree...you don't turbo a motor so you can be careful with the boost..that's just a waste of time and $$. Why be careful with the boost? Oh...because you'll destroy a high compression motor...: ) Especially if the motor has 150-200K on it...You just in a Really round about way said the same thing I did...put a B23FT in it...cause it's the easiest and best thing to do..or just throw a Chevy 350 in it

 

After considering how much a new engine is ill run this one to 8psi and if it goes stuff happens. 900 for 100k+ engine or wait it out and 2000 in fresh forged pistons and h-beam rods. I'm gonna run this block. I will probably get head studs. And fuel/spark will be megasquirted I'm thinking. Its cost effective and can be made more defined and changes made a bit easier.

 

I do have a 350 and 4spd trans, considered it. But I wanted to keep the original engine. May look into the T5 conversion.

 

So...you don't think overboosting a lower compression motor will blow it up? I've always kinda thought detonation would bring down any turbo motor, regardless of compression. The OP said it best. It's a high mile motor and a motor swap is cost prohibitive at this point. And, I didn't say use a B23FT motor...those are great motors...forged pistons, rods and crank...but in as much as the B23FT was only built for one model year, the 84 760, they are kinda tough to come by. You probably mean the B230FT used from 85 on in the 740/760T's. The problem there is from 85-90 Volvo went from the 13mm M rods used previously to 9mm rods in their quest for better gas mileage. That era motor is not the stoutest. In 90 they swapped back to 13's and by 94 had come out w/ the L block with piston squirters. So...the later L blocks are the best candidates for high boost applications other than the elusive B23FT.
And, for the record, I'm not a fan of +t'ing 200k motors...not a fan of +t'ing period. But, it's done on a regular basis w/ decent results and not a lot of money.

 

Go for t! Check out turbobricks.com Tons of information on +T'ing your motor as well as the T5 swap.

 

That's all I was trying to say...cost a lot of $$ to turbo and then that's not all you have to do to it...and once you have it "done" BOOM there goes your motor...any Volvo enthusiast/performance junky/EDUCATED person will NOT turbo a B230F motor.....unless they are just F--ing around cause they have nothing better to do and WAY too much time on their hands and want to see what happens...a rookie or just someone not looking for much of anything out of the investment of both time and $$...more of a test than anything...it's like going to a strip club...it's a teaze and your rarely if ever going to get some.... At least do it and have something cool and worth your energy..YES, I prefer the B23FT(or a chevy 350 makes a nice sleeper).... but like you said I think from your last post was install a turbo motor from a 940T (B230FT) that will work too...and it's commonly done however, most B230FT's that I have come across..if not every...have aquired piston slap...not so with the B23FT...so just be looking to rebuild that B230FT with new pistons etc.. or find a B23FT and run it...far robust and superior set up bro and something to be proud of...just my opinion though and that is why an OPEN forum is so great!!!

 

I had read that the rods were weaker from 85-88. Just what I read but both of my cars are outside of that range. The 89 if it gets one will be very conservative, like Volvo intended, ha. The 84 is gonna get scary. If this motor goes there's always a 350. And it wont make a good sleeper. The engine is gonna sit still Ans the car is going to shake around it with the cam I've got. Anything to say for the megasquirt? Guy nearby has full factory 240 Turbo setup, from manifold to ecu. And has a megasquirt believe 2.2. Real reasonable prices.

 

85-93 240 is same motor B230F....B23FT is 84 760...B230FT is 740T's/940T's/85 on 760T's

Itls the same motor

 

Guy near me has An 88 740t setup. Will this work on my 84 240? Its complete computer, maf, manifold, Turbo, ic and all. I need Mar either way mine toast. His setup is $300, new maf is 200. Will it plug and run? I'm okay with some wiring but don't wanna dig a pit with buyin something that will cost aton to finish. But price considered if it will work I'm in. I'm used to building Honda cars you can plug most ecu and engine in and drive that day.

 

Need to swap the engine wire harness,make sure you get the entire Exhaust including intake manifold and exhaust manifold and header etc, ICU,power stage, fuel pump relay,ECU...upgrade to the larger main fuel pump if you don't have it already...but yes it will work...that's a 007 MAF and they are a dime a dozen...I would get a used Bosch or a new rebuilt Bosch only...programma etc...suck! If I were you I would listen to the motor run before you buy it...like I mentioned most the B230FT's aquire bad piston slap...

 

Swift justice is the voice of reason here. With the LH 2.0 came a vacuum advance distributor, you can use that without swapping over and EZK, LH2.2 doesn't require a signal from the EZK. You can boost an NA motor its done with the volvo motors all the time. NO need for a larger main fuel pump.

What you will need to do it is, exhaust manifold, turbo, downpipe, piping, preferably an intercooler setup. New injectors. To avoid all the extra drama you can use the ones from a turbo 850. Wiring harness, ecu, 3 wire o2 sensor, maf, water sensor, boost guage will become helpful. I'll think about the rest. Its very easily doable for under 500 bucks and they make good power.

Piston slap what?

 

I got Turbo/manifold, ic piping, ic, fuel injectors, fuel computer, believe te spark computer, fuel rail, maf sensor, downpipe, And probably some other goodies I can't think of because I'm not looking at it all right now. All from what I believe was an 88 760? That's what he said, all for 300. Turbo shaft had near no play and spins beautiful. Now all I news is to find wiring diagrams and or a thread on someone who's done it like this. How much boost is that stock? I read its a t3, says garrett .42 a/r.