Jacking Advice - Seven with rear silencer

19 posts / 0 new
Last post
CtrMint
CtrMint's picture
Offline
Last seen: 2 days 6 min ago
Joined: 13/06/2018
Jacking Advice - Seven with rear silencer

Afernoon all,

Just wondering what the recommended approach is to jack the rear up when you've got a rear silencer fitted.  I don't think a low entry trolley jack will clear the silencer from the rear.

Thanks

Jonathan Kay
Jonathan Kay's picture
Online
Last seen: 2 min 41 sec ago
Joined: 17/04/2014

Would running up onto a couple of planks add enough clearance?

Jonathan

Wrightpayne
Wrightpayne's picture
Online
Last seen: 9 min 12 sec ago
Joined: 17/04/2014

What Jonathon says - I have a few bits of 2x9 in the garage

CtrMint
CtrMint's picture
Offline
Last seen: 2 days 6 min ago
Joined: 13/06/2018

I suppose that might work, although I never like doing that sort of thing.  The plastic tiles I have on my garage floor aren't slippy but you certainly can't use ramps on the fronts, the ramps are expelled with some force if you back down off them.  Wood planks at the rear will probably be more of an immediate drop-off, so not likely to be as much of an issue.  Driving on though, I suspect they'll be pushed forward as there is no resistance on the floor.  Even with rubber underneath I suggest they'd move.

I guess I could also take wooden planks on track days, I want to take spare wheels and tyres for wet weather running,   Being able to jack the car at track day is therefore important.

 

Caterham 420R S3 Lotus Toxic Green,  awaiting Caterham 620R delivery. Blog: https://www.caterham7diaries.com
Wrightpayne
Wrightpayne's picture
Online
Last seen: 9 min 12 sec ago
Joined: 17/04/2014

Or jack up on the outer A frame mount, put the plank under tyre. Repeat other side then jack on dedion / diff.

On my 911 the point to jack and place for axle stand are too close together bringing the jack in from the side. I jack up each side, put 4" of blocks under each front tyre then I can get the jack in from the front of the car so it doesnt clash with axle stand placement.  Its a phaff but the safest way to do it.

another idea for driving onto planks is to nail some 2" webbing (old seat belt ??) on the under side of the wood so it leaves a tail you drive onto first which should stop the wood sliding IYSWIM

Ian

rj
rj's picture
Offline
Last seen: 2 hours 6 min ago
Joined: 17/04/2014

I usually jack mine just under the scuttle lifting one side at a time.

(I have rear exit exhaust as well)

 

 

tbirds search:

Blatchat Google Search

Jonathan Kay
Jonathan Kay's picture
Online
Last seen: 2 min 41 sec ago
Joined: 17/04/2014

I'd start with Ian's modified plank trick.

Beyond that:

  1. Can you take the wheels off the jack to drop the nose?
  2. Do you have an engine crane or convenient beam to lift the car by the roll bar? Although it won't help at the track!

Jonathan

aerobod
aerobod's picture
Offline
Last seen: 51 min 40 sec ago
Joined: 17/04/2014

I think most alloy "racing" jacks will fit under the silencer, the one I have has a saddle height of 90mm in the lowest position, with a height of about 100mm where the lowest point of the silencer would be. I use a rubber hockey puck in the saddle "cup" and lift under the deDion centre boss. It may require a second hockey puck for the jack to clear the silencer while the hockey pucks are in contact with the deDion:

James

DJ.
DJ.'s picture
Offline
Last seen: 8 hours 53 min ago
Joined: 17/04/2014

I don't know if this is practical, but would it be possible to remove some plastic tiles under the centre rear of the car. It might just give you the space to slide the jack under the silencer and jack as usual.

Duncan

ScottR400D
Offline
Last seen: 2 days 11 hours ago
Joined: 23/08/2015

Before I got a low Jack I visited by local timber yard. 

A 3m piece of something like 250 x 75 timber was a few £. 

They cut it in half, 2 x 1.5m. Then ran each half through the bandsaw on its edge, cutting through at a shallow angle to give me 4 pieces with a nice run up on each end. 

Place them all up to each wheel and just roll the car up on to them. 

Better if you can get jack to work without but an option if necessary. 

gulf 1
Offline
Last seen: 1 day 18 hours ago
Joined: 27/11/2014

Hi Mark

Would a quick lift Jack work.I got a second hand one best thing I have ever bought,excellent at home invaluable  on trackdays.