FAO Simon or any Rover Turbo Owners

-Mike- · 25 Mar 2006 at 22:15

My friend has a rover 220 turbo and is wondering what the maximum safe boost to run through the engine is. He has a bleed valve and its currently boosting at around 6psi. How much more can he put through it with a standard engine without it blowing up?

Cheers for any help

benno_bro · 25 Mar 2006 at 22:22

-Mike- said:
My friend has a rover 220 turbo and is wondering what the maximum safe boost to run through the engine is. He has a bleed valve and its currently boosting at around 6psi. How much more can he put through it with a standard engine without it blowing up?

Cheers for any help

The general agreement amongst the rover lot is 12 psi max, although bleed valves have issues with spiking. I'd recommend getting a boost control valve such as a GBE.

Just be Steady in first etc as the torque will kill the box with the standard boost control valve being bi-passed, due getting all the power in one lump instead of modulated across the rev range as standard

-Mike- · 26 Mar 2006 at 03:00

He has taken it to 12 and slightly higher I think but he's running it at 6 because he doesn't want to break it. I've not been out in it but apparently its quite a rapid car, certainly compared to his 220 coupe

s0ck · 26 Mar 2006 at 03:04

12psi and be gentle in first gear.

benneh · 26 Mar 2006 at 03:18

Yup, 12psi (mines set to 11) max, for the gearbox's sake really. And as said be gentle in 1st gear, and head on over to http://www.gb-ent.com/ and order a GBE boost valve mk2 (GBE Mk2A Mechanical Boost Controller - easier to adjust) and a boost guage. The bleed valves are a bit dodgy.

-Mike- · 26 Mar 2006 at 03:24

Do they chew through gearbox's when you up the boost on them? I'm not too sure on mileage etc of this one but he's keen to look after it and hoping it will last him a while

SgtTupac · 26 Mar 2006 at 10:56

if you keep booting it in first youll chew gearboxes. Tell him to be gentle in first and it will be ok

benno_bro · 26 Mar 2006 at 13:01

if he's keen, tell him to sign up to www.rovertech.net and all the info he needs should be there

Ish · 26 Mar 2006 at 14:06

as said up the boost to 12 psi and then start saving for a gearbox rebuild with steel cage bearings!!

Jonnycoupe · 26 Mar 2006 at 15:32

delete pls mods

Simon · 26 Mar 2006 at 15:36

Hi,

As mentioned 12psi is the max safe. I ran 13psi on a bigger turbo and intercooler without problems. The limit of the pistons is hot heat but infact the ring lands. Make too much power and the ring lands simply crack. (Over about 240lb/ft I reckon from experience) or of course too early timing.

12psi and no booting it in first around corners should help the box last. Gearbox is only really rated at 174lb.ft.
I've been running well over standard power for a long time and not really had any gearbox problems, even driving the car hard and doing about 20k miles a year. Coping with 250lb/ft at the moment just fine. I am using a 600ti box though which has a stronger diff, the main problem you get is the diff bearings collapsing (plastic cage) and taking the early Type A diff out and requiring a rebuild. Uprated steel caged bearings are the way forward but they tend to be a bit noisier.

Si