I normally use the diff when jacking up from the rear and use the front sills to jack the front up. I never use the part of the chassis you pointed out and over time may collapse. Might be wrong tho.

 

I use the front crossmember/subframe thing; there's a pressed steel 'X' in the centre marking the spot...

 

don't do it lol .... the bit in that pic is like plastasine

as said do what they do

 

Hi,my car was a drift/track car in Japan so hard to find a none dented bit under it.I jack it up often so now have a 2tonne electric jack with a 250x50mm plate on top and use cills with no creaks,I do put a second jack under somewhere just for a bit of safety.Cheers.

 

Diff on the back and the towing eyes on the front if using a trolly jack. if you cant get the jack under the front bumper drive up onto the curb or nail some different length planks together to make a cheep ramp.

 

Well said.

Meet the Frankenramp!

It works for me

 

you can jack it up on that bit but ffs dont use that jack head get a bit of wood that covers the width at least of that part as the strength is on the corners not the middle, the longer the better as well, or like the rest say use the diff,

 

as above, pull the head off your jack a use some timber so it sticks out either side. If the head dont come off then drive the car onto some bricks to give clearence. Then place the timber on the jack head and jack up. It will make some creaking noise while the jack head sinks into the timber. The timber you want should be about 6"x6" x2"

 

If it creaks......stop jacking and find a different spot lol

 

Nissan specifically says not to jack up Skylines by those chassis rails.

Use the jacking points under the sills. If you have "Type M" sideskirts then they clearly indicate where to jack, as two square cutouts in the skirt plastic's underside frame the jacking points nicely...

For use with a garage jack like the one in the picture, you can buy special pads made of semi-soft polyurethane that protect the sill and return to their original shape when you let the jack back down.

These are the ones:

 

i jack my car up on the chassis rails all the time and also use the chassis rails when i put it on the 2 poster as my sills collapsed with the weight of the car when i put the jacks there.


regardless of what peaple say the chassis rails are part of the strongest structure on a vehicle and so can withstand the pressure.
however thats my opinion in all the years of being a mechanic and always using chassis rails/legs to lift a car

 

To jack mine up i take it to a garage!

 

:funny::funny: lazy fecker :funny:

 

i use the rear mount for the suspension. the bolt faces downand fits squarley inthe middle of the jacks cup, plus i figure this bits degisned to take a fari beating from road useage and stress, as the car sits on it all the time.

si.

 

the chasis rails in a skyline are paper thin and weak as piss,they will deform if you jack the car there,it just looks unsightly and i wont do it to my car,the sills are also weak as piss,great to own a skyline hey!they will fold over if you use a normal garage jack with a steel top on it,so if you get a piece of timber about 1.5 " thick and cut a 1/2 inch slot for the sill in it and use this on the jack it will save the purty looks of your cars underbelly,you can jack at the chasis rails if you have a very low jack and a piece of wood to spread the load 10 " or so

 

Heres an extract from the r33 service manual. Note what it says about the chassis rails. Theres evidence on mine of where someone has used them in the past.

 

The polyurethane pads I mentioned protect the sills so they're not deformed.

I fitted 4 of them to my 2-post lift and never looked back... they conform to any car's shape. Great stuff.

 

where do you get them badboys from? o for the jack head and my 4 poster?

And ye as the reeper has stated, i to lift the car from rail with the 4 poster!

 

The Norwegian version of Halford's have them... maybe you can find them on the bay?

 

i will have a look for them on the bay!

Also i dont find it safe to lift a car from the cills on a 2 poster, if ever the car was to slip or the arm move while trying to get a tight bolt off underneath the car would fall.

When coming off the chassis rails, if it was to slip the car would only drop 1" or so onto the arms or the floor pan. Yes it would damage the car but it wouldn't damage the guy working underneath the car.

 

My 2-post has lockable arms. And the poly pads lock the sills in pretty tight so there's no way it'd be coming down..... unlike a norwegian bmw owner who used a pair of unstable wood blocks and watched his car drop from 5-6 ft :nonono:

 

Im tempted to get the skyline well up on axle stands in the driveway and get it a good clean and painted underneath. Where at each corner would be best to set onto axle stands then.