LocostUSA.com

Mazda Rx7 engine (13B) with flywheel, starter, and tranny (no exhaust, intake, or alternator) 290 lbs.

That's interesting that you measured the 13B to be so much lighter than the 12A we measured in similar configuration, at 290 vs 375 pounds both including clutch, flywheel, and trans...Unless the intake, alternator, and oil are really heavy or somebody's scales are a bit off.

What are the dims on these?

As far as production v8s go, the Cadillac early to mid-90s 4.9L fwd v8 is 340 lbs/154kg and is only 19 inches from the shallow forward end of the oil pan to the top of the throttle body. It is 22 inches from the front of the crank pulley to the back of the engine block.

I don't remmeber if I had the PM starter and alternator installed for weighing.

It is MPFI with dual throttles in the center. 200 hp and 275 tq.

For comparision, a vette all aluminum ls weighs around 450 lbs while the truck 5.3 weighs over 500 lbs. The truck motors are cheaper but the oil pan and intake add around 4 inches vertically. They made the tb extra high to clear the cooling fan.

This is from Mantell Motorsports, http://www.mantellmotorsport.com/
Pete Mantell weighed a 3.4 crate motor for a customers project they were building.
The cut and paste is off the MG Forum, not his business site.

"I thought some of you weight conscious converters would be interested in this info.

I am working on a V6 Conversion for a customer
I used my racing scales that some of you have used at various conversion meets.

The engine is a 3.4 V6 GM Crate Engine part number 12363230 155 HP/194 ftlbs.
This engine is the all iron block and heads engine, direct replacement for the 82-85 S10. (see link)


Parts included on the engine weighing were:

Flywheel and clutch assembly.
4 Barrel Carb and intake.
Starter.
Headers.
Water Pump.
Valve Covers.
Spark plugs.
Harmonic Dampner.

Total weight 362 lbs."

Any of the smaller items such as the dist or whatever you are using can be weighed easily on their own to make a total weight.
I asm not making any opinions on whether it is heavy or light compared to other engines, just if you are using one of these then the weight should be fairly indicative of what you using.
Al








http://www.mantellmotorsport.com/

Driven5 wrote:That's interesting that you measured the 13B to be so much lighter than the 12A we measured in similar configuration, at 290 vs 375 pounds both including clutch, flywheel, and trans...Unless the intake, alternator, and oil are really heavy or somebody's scales are a bit off.

I have no experience with either engine, but would like to point out that manifolds and alternators aren't super lightweight items. I'd think an alternator could weigh 30 pounds. Four quarts of oil is about 7.5 pounds. So if the manifold weighs 50 pounds(seems heavy to me too.) it jives. Or the alternator might be even more. Also, when the alternator isn't included, does that mean that the accessory brackets also aren't included? Those aren't exactly made of magnesium and fairy feathers.

I also weigh six pounds more on my scale than on my in-law's scale at mid 160s. Could the error be 10 to 15 pounds at those kinds of weights? And I usually eat well when I go over there.

Ooh! Perhaps the 12A had just eaten a large meal. Or perhaps the 13B had just taken a... had, uh.... had just eliminated a meal.

Just some thoughts.

Any idea how much the Volvo T5 whiteblock weighs?

Black Eagle1990 wrote:Any idea how much the Volvo T5 whiteblock weighs?

No idea, but being aluminum should help. If only there was an easy way to mate them to a RWD manual transmission more people might be looking at them.

Just found this on the S2000 engine. This seems to jibe with what Brian @ Ultralite found too. He had a complete Miata assembly and a complete S2000 assembly and found out the S2000 was lighter than the Miata by 50#.

"Since I have them both out (04) and attached together still I put my engine and tranny on my Long Acre scales to see what they weighed. Engine had no water or oil, but tranny still had fluid in it.

I put 1 scale under the oil pan and the other under the tranny mount (back of tranny)

Total Weight was 400lbs, 273lbs on the front scale and 127lbs on the back one (under tranny mount)

weight does include hoses and wire harness.

no ac compressor or exhaust header tho"

I myself put a Honda F series engine on real scales today and as I suspected manhandling it around it's effin heavy.

205 kgs or 450 lbs as pictured.

I have had various arguments with people over time as to the weight of aluminium engines and will mention again that they aren't light just because they are aluminium

carguy123 wrote:
I put 1 scale under the oil pan and the other under the tranny mount (back of tranny)

FWIW - I put a chassis on the scales today with similar method, 1 end of the chassis on the scale and the other end on a block to level it then turned it around, did the same and added the 2 weights together.

Then I put the chassis on it's side and did a single measure.

2 ends added = 115 kgs
single weight = 98 kgs

Take from it what you will.

Pinto 2.3L Head Weight = 70.0 pounds.

Since I have the head off to replace the head gasket, I weighed it. It's a stock 1976 cast iron head with all the valves, lifters, springs, followers and cam still installed. It came out an exact 70 pounds.

John

I found this while looking for the weight of a 2.8 chevy 6. Don't know how accurate it is but it might help people ball park it.

Alex

http://www.35pickup.com/mulligan/weight.txt

Locost_Johnh wrote:Pinto 2.3L Head Weight = 70.0 pounds.

Since I have the head off to replace the head gasket, I weighed it. It's a stock 1976 cast iron head with all the valves, lifters, springs, followers and cam still installed. It came out an exact 70 pounds.

John

Dude! That's friggin heavy.

Arekusu wrote:I found this while looking for the weight of a 2.8 chevy 6. Don't know how accurate it is but it might help people ball park it.

Alex

http://www.35pickup.com/mulligan/weight.txt

That list has been getting around for a while but the problem is no one knows the exact variables - some engines have transmissions, some have accessories, some with flywheels and some don't and theres a lot of weird engines there too!

Driven5 wrote:

storx wrote:The tranny weights from the service technical book i have says
AUDI A4 1997 1999 M.T., 1.8L, Quattro (code DJJ) 84.7lbs

So according to your book, the audi transaxle weighs little more than the good ol' fashioned T5 even though it additionally has a ring/pinion and 2 differentials housed within the transaxle case. The numbers I've seen from people who claim to have physically weighed them on the GT40 sites appear to put the older 2WD 5spds more in the 50-55 Kg (110-120 lb) range. http://www.gt40s.com/forum/gt40-tech-po ... htest.html

Even if my (admittedly) guesses based on other known transmission weights are as far off as your service book suggests, the "engine weight" would still be under 200 lbs...Which still draws the BS flag for anything close to a "complete" 1.8T.

I just weighed an 05 FWD Audi transaxle(012) on an intercomp corner balance scale, 100lbs exactly. This is the same trans that is in the "normal" boxster BTW. We have an 01E 5 speed quattro transmission here at the shop, I'll try to weight that one as well. Definitely going to be A LOT heavier! (cast iron center section!)