KA24DE block weight- in case someone cares

[djsilver]

I bought another 240sx Friday. It had a bare block sitting in the passenger's seat, with a few other parts in the trunk. I just had to pull out the bathroom scale....,

The bare block weighs 106lbs
The girdle weighs 12lbs
The crankshaft weighs 38lbs.

[hai1206vn]

Nice.

Posting McCoy's numbers for the SR for cross reference http://nissanroadracing.com/showpost...7&postcount=69

[djsilver]

Yep, the SR block is ~45lbs lighter but they come out close because of the extra turbo stuff on the SR. I guess that means I can turbo my KA and still only weigh ~45 more than the SR?

[stewiefied]

But you'll actually have torque to push that extra 45lbs.

[hai1206vn]

45 extra lbs is a fart

[Def]

Yep, the SR block is ~45lbs lighter but they come out close because of the extra turbo stuff on the SR. I guess that means I can turbo my KA and still only weigh ~45 more than the SR?

I don't think the turbo stuff on an SR adds up to 45 lbs. The turbo manifold weighs about the same as a tubular header for a KA, so not a huge difference there, and a T2 based turbo just isn't that heavy. Even adding on an IC etc. it's not near 45 lbs.

[stewiefied]

He's saying if you turbo the KA, then it would roughly be 45lbs heavier than the sr. If they had comparable turbo pieces and the aluminum block weighs 45lbs less.

[logr]

But you'll actually have torque to push that extra 45lbs.

[Def]

He's saying if you turbo the KA, then it would roughly be 45lbs heavier than the sr. If they had comparable turbo pieces and the aluminum block weighs 45lbs less.

I don't think it works like that, as I still think the SR even with the turbo stuff is more than 45 lbs lighter than a KA24DE. At least it sure felt that way moving both around on an engine hoist.

So you're already starting off with probably at least 40 lbs difference between the two, then if you add ~25-30 lbs of turbo stuff to the KA it's probably closer to 70 lbs heavier if you turbo the KA.

[Longfellow]

The front of my car raised 1/4 after I put the SR in last month. Thats with 6kgmm springs up front.

[AceInHole]

I'm wondering how much merit weight loss has to do with the front of a car raising after fiddling with it. I still can't get a jack under the frame on my car, and it doesn't even have an engine in it.

[Def]

I'm wondering how much merit weight loss has to do with the front of a car raising after fiddling with it. I still can't get a jack under the frame on my car, and it doesn't even have an engine in it.

Well, IIRC you're running like 700 lb/in rates or something like that up front. So maybe 400 lbs off the front end isn't going to do much when it'd take 1400 lbs to compress your springs an inch.

[flip240]

Nice info to know.

[AceInHole]

Well, IIRC you're running like 700 lb/in rates or something like that up front. So maybe 400 lbs off the front end isn't going to do much when it'd take 1400 lbs to compress your springs an inch.

Well, 400 lbs should translate to 1/4" easily if 40-100 lbs (depending on who you ask) raises a car as much on slightly softer springs. It just makes me wonder what else people swap/ remove when doing the swap.

[Longfellow]

My car dosnt have the A/C compressor on it at the moment. Other than that its an SR with everything on it and a custom intercooler setup.

Its nice too because now the front doesnt rub like crazy. I thought I was going to have to raise the car but the motor did it for me.

Also the car lowered itself about 1/4" when I swap from 8k springs up front to 6k springs (back when I had the KA in the car). Thats when my rubbing issues started.