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L28e Engine weight???


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#21 NZeder

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Posted 07 January 2009 - 09:32 PM

man RB26Dett is one damn sexy motor.  :P get rid of it NZeder  ;D getting bad ideas and making bad decisions.  ;D

no that is a RB26DE no TT just NA all the way and 260ps factory it was build but Autech and was in a 4 door 4WD Auto only R32.

Look at that though a LS1 is the same weight as a 20B rota so they are heavy little pups really as the 20B is still not a large engine.

Also don't forget that most of these weights might be based on stock engine ie cast headers/exhaust manifolds as put on a header (or new turbo manifold if a turbo car) and you can save 10kg

#22 RBZ 260

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Posted 08 January 2009 - 07:47 AM

no that is a RB26DE no TT just NA all the way and 260ps factory it was build but Autech and was in a 4 door 4WD Auto only R32.


i though someone just removed the manifolds and turbos nevertheless. if i ever go the RB26 path it will definetly be twin turbo or one huge hair drier to replace the twins.

Im a turbo nutter. i love my turbo lag, turbo/jet whine you know the (whoooooosh),the resulting shove in the seat and neck/head in the boot.  ;D.

on a very expensive note how nice would the new GTR engine sit in aS30? all 485hp of it. hmmm got to keep an eye on damaged car auctions  :P

#23 sco_aus

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Posted 08 January 2009 - 06:56 PM

hehe, that'd be cool

#24 Mick280zx

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Posted 21 January 2009 - 04:52 PM

So in the end (I'm not predicting this IS the end!) .....

All motors seem to have a consistant power/weight ratio?

At some stage I was going to ask the same question that the original thread poster did... but there doesn't really seem to be any point chasing down a super light engine as even those with alloy heads/blocks are still heavy muthas!  8)



#25 NZeder

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Posted 21 January 2009 - 05:15 PM

hmmm light weight....turbo motorcycle engine but not in a car the weight of a S30....

Don't go too light either or the will upset the 52/48 balance too much.

Anybody got an idea on what the 370Z 3.7l V6 comes in at? Or forget the weight of the engine and lose weight in the car via other methods.

Item----------------Stock ------------- Fibre Glass--------------Carbon Fibre
Bonnet--------------17KG---------------4KG----------------------??
Bonnet hinges---------3KG each side------Pinned 0.5kg------------??
Front guards----------??-----------------??-----------------------??

Then strip of all the sound proofing, underseal and other unwanted items (much like Nissan did with the factor 432R) heater, extra wiring, backets not needed, replace the glass with lexan/PC etc and get the car under 1000kg with a 350kg drive train that will make up for the weight of the engine

#26 Mick280zx

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Posted 21 January 2009 - 05:30 PM

I guess you could get out the calculator and do a cost/benefit analysis! I reckon I could get about 150kg out of the 280zx in half an hour just using a 13mm spanner hehe!

You forgot one thing- most of us Aussies could afford to lose a few kg's after christmas! I know I could. That could result in a few tenths over the quarter.

I read an interesting article 'somewhere' about the influence of rotational mass (wheels, gearboxes, flywheels etc) over what I guess you could call 'static' mass (panels etc).
Very complicated but I beleive the end result is that rotational mass is the weight you want to reduce first. I'm sure someone else can correct/add to that....

:)

#27 stevo_gj

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Posted 22 January 2009 - 10:04 AM

Hmm that's an interesting statement. I know that when you steer the car left or right your rotating masses will create a moment about the centre of gravity of the car. (gyroscopic effect) But I didn't think this was a bad thing?

#28 zedevan

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Posted 22 January 2009 - 11:54 AM

i think by rotational mass he means the parts of the car that are rotating while the car is going straight.

I've heard its particually the case with the unsprung (??) parts of the car such as wheels and brakes.

#29 chris240

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Posted 22 January 2009 - 11:55 AM

geez Mick your right about culling weight off a late model L28...Ive got an L28 on an engine stand, & in 8 mins I removed the entire air-con gear, It must have weighed 950kg !! I havent even started to attack the power steering gear.
By the way,  if anyone wants air-con gear for a 82 model L28, I'll swap it all for a Big Mac meal.

#30 Mick280zx

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Posted 22 January 2009 - 06:24 PM

Haha! But everyone knows that Big Macs have gotten smaller over the years mate so I think you'd be getting ripped off!

I'm looking to ditch the air con on my L28E as well... who needs it eh!

#31 NZeder

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Posted 22 January 2009 - 06:50 PM

stripping all the stuff you don't need on a engine make a big difference. I have a RB25/26 engine on a engine stand and next to it is a L28 on the same type of engine stand. Both have been stripped of aircon, power steering pumps etc. But both have intake and exhaust manifolds still on (L28 the factory cast unit) and they both feel to be the same weight and look to droop the same amount on the stands - this was not the case when they were loaded. The RB looked much much heavier with all the kit on vs the L28 with the kit. But after removing all the pumps etc a large weight saving was made. Both are NA setups by the way.




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