924Board.org

[77924]

Can the v8 in the 928 fit in a '77 924? I would really like to do it, as long as I wouldn't have to totally redo the front end!

[geddes66]

This question is talked about way down there somewhere. I think the answer was: No. The MacPherson towers are too close together.
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The Porsche is now my son's, my car is cooler, slower but cooler.

[Lizard]

ok I will tackle this one (dont normally look in this sectionof the forum)

the 928 engine will physically fit in the bay, the 924 engine bay is actually 2" wider than the 928 engine bay (dont go look at one you can BARELY see the ground it is scarey) however the brake booster is in the way, so you would have to run manual brakes,

I am actually dropping a 928 S 5.0L DOHC V8 into a 931 chassis I have, however I am also installing 930/928 S4 4 piston brake calipers and rotors all around and WANT that extra braking power due to the fact that I will be using a 928 S4 5 speed w/ 2.20 final ratio and my top speed will be over 300kmph, so what I am doing is as I said using a 928 S4 tranny, well I am using the torque tube as well, the torque tubes are alittle longer, (I may have to shorten it not sure) this will then move the engine forward giving me clearance for the brake booster, however I will then have no room for the rad (btw, with the 928 engine going in w/o moving it forward you will have to convert to a 951 rad mounting as it is further forward) so I am relocating the rad into the rear of the car and routing the air under the car to it and out between the rear tail lights, w/ a fuel cell right infront of it as I will have to take out the gas tank to be able to get enough air to the rad.

the main reason also for leaving the booster in is not only speed but BHP, I am going to be eventually twin turboing the 928 engine w/ forged aluminum pistons and stand alone EFI I will be running over 1 bar of boost and be pushing over 600RWHP, I am planning on getting the car down to around 2200 lb that is a power to weight ratio of 3.6 lb for every horse, some would say I am suicidal though as I want to keep the chassis looking stock on the outside meaning that I will have a maximum tire width in the rear of about 235 MAYBE a 245, but I will have to learn to have a light right foot and enough downforce to keep me out of the clouds.
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3 928s,

[Llamaguy]

[quote="Lizard"]however the brake booster is in the way, so you would have to run manual brakes,

[quote]
what do the 928's use for brakes?
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1987 924S Guards Red
1997 Suzuki Tl1000 Supersport

[My924gtc]

Lizard I am thinking of picking up an '82 928 parts car that has a 60,000 mile engine in it. I am going to do this same conversion so we'll have to figure out some kind of mind link. I will be needing your assistance with it I am sure. Just another reason why I should move to BC huh?
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MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
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[stv951]

Any progress on these conversions ?

Any pics?

[CBass]

Nah, Lizard used his DOHC V8 to replace the engine in his new 928S.
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'81 931 in various states of assembly

[numbbers]

So, isn't there a modified aftermarket brake booster available that will clear a V8? Or, how about the brake booster from a '70's GM diesel. They were hydralically boosted by a pump.
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1980 924 Turbo

[Peter_in_AU]

I was at a small-town festival a couple of weeks ago and they had a display of classic and vintage English cars. While looking over a nice daily driven Jag E-Type I noticed that the booster was on the left side (these were all right-hand drive cars). The owner told me that it was a remote hydraulically activated booster and was standard on the E-Types because there was no room for a booster on the right (driver) side of the engine bay. Shortly after I was looking at some Wollesleys and two of them had after-market remote boosters added.

A remote booster could be mounted anywhere. A Datsun 260Z I had 20 years ago had the booster mounted in the cabin above the the passengers footwell. I don't know if this arrangement was in all 240 and 260 Z cars or just the right-hand drive ones.

If it's not obvious, the way they work is this; the brake pedal is connected to a master cylinder (same as a hydraulic clutch), the output from this brake master cylinder is connected to the booster with standard brake hose (in place of the usual rod from the pedal) and the booster then operates a second master cylinder just like a normal booster.

Flex your google skills and look for "remote brake booster". I know they are available after-market because the boosters on the Wollesleys were both new.

Here's an example http://www.ecihotrodbrakes.com/remote_booster.html although you can probably find a cheaper solution if money is an object.

Another option depending on how much space you need might be to cut a hole in the firewall the diameter of the booster where the booster mounts and make up a "cake-tin", weld it into the firewall to mount the booster closer to the pedal. This would require a shorter activating rod and I don't know how close you can move the booster to the pedal but if you just need a couple of cm/inches this might be an option.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

[Adie]

Yep. there on all roots group cars, Jag, Rover, BMC, Austin Motor group aswell, you can buy them new from 'Europa' howeer just as a note, they are a single circuit, therefore you need to think of a bias valve if you think you need it. BMW also do a small one (well in the UK they do).
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924 zero cylinder race car,