How to de-restrict my rover 25 ?

rachido · Post by **rachido** » Sun Sep 16, 2007 6:43 pm

iv got a rover 25 1.4 IL 84 ps and looking to de-restrict it to get 103ps , does anyone know how i can do this

Post by **SubCat001** » Sun Sep 16, 2007 6:44 pm

IIRC you need to swap the throttle bodies over. As the 84ps one is smaller.

HTH

rachido · Post by **rachido** » Sun Sep 16, 2007 6:50 pm

is it just a straight swap? would i need to change the throttle cable aswell?

southside · Post by **southside** » Sun Sep 16, 2007 6:59 pm

Think you need to change the cable aswell

empsburna · Post by **empsburna** » Sun Sep 16, 2007 7:01 pm

yeah, cable and TB.

rachido · Post by **rachido** » Sun Sep 16, 2007 7:12 pm

i cant post in the wanted section i dunno why, is anyone selling the cable and tb ?

Post by **SubCat001** » Sun Sep 16, 2007 7:22 pm

rachido wrote:i cant post in the wanted section i dunno why,

To post in here you must be a member of the "Approved Traders" group. Go to "Usergroups" at the top of the page, Select "Approved Traders" from the list, and "View information". Then click on "Join this group". To become a member of this group you MUST have at least 25 posts on Rovertech.

rachido · Post by **rachido** » Sun Sep 16, 2007 7:24 pm

thanks for that, i better get posting

Sie214 · Post by **Sie214** » Sun Sep 16, 2007 7:32 pm

Think you will find you can cut out the stops in the throttle body that is what stops it from opening all the way.

Sie

Lehto · Post by **Lehto** » Sun Sep 16, 2007 10:38 pm

The throttlebody is the same and so is the cable i think. Its just that the flappers "arm" is shaped so it cant open fully and then restricted with a block so it just wont open. Just change the throttlebody to unrestricted ones TB or a 52mm one and it should be derestricted.

southside · Post by **southside** » Sun Sep 16, 2007 11:10 pm

Lehto wrote:The throttlebody is the same and so is the cable i think. Its just that the flappers "arm" is shaped so it cant open fully and then restricted with a block so it just wont open. Just change the throttlebody to unrestricted ones TB or a 52mm one and it should be derestricted.

Thats what i thought but i've since been told by a few people that you need to change the cable aswell as its shorter or longer one of the two, so it doesn't open so far.

mini_vtec · Post by **mini_vtec** » Mon Sep 17, 2007 12:04 am

Is the 84ps still a twin cam

What HP figure is the 1.1 16 valve K series in the 25's

empsburna · Post by **empsburna** » Mon Sep 17, 2007 12:05 am

mini_vtec wrote:Is the 84ps still a twin cam

What HP figure is the 1.1 16 valve K series in the 25's

I'm pretty certain they didnt do a 1.1 in the 25's or a 1.4 8v - i think it was just a restricted 1400 DOHC

mini_vtec · Post by **mini_vtec** » Mon Sep 17, 2007 12:10 am

Parkers show them as a 1.1

So your saying its really a 1.4 just restricted by inlet and exhaust

richard moss · Post by **richard moss** » Mon Sep 17, 2007 12:33 am

There was a 1.1 litre 25 - just as there was a 211 before it.

mini_vtec · Post by **mini_vtec** » Mon Sep 17, 2007 12:36 am

What HP figure was the 1.1l then

will-220GSiTurbo · Post by **will-220GSiTurbo** » Mon Sep 17, 2007 6:56 am

im sure ive read somewhere the 1.4 8v is 75 bhp, but someone may correct me, cannot remember where ive read it though

Post by **Punx0r** » Mon Sep 17, 2007 1:18 pm

Look on parkers!

barber · Post by **barber** » Mon Sep 17, 2007 2:51 pm

well it should be pretty obvious wether its an 8v or 16v.

then it should say on the logbook if its 1.1 or 1.4,
i think these two engines, the 1.1 16v and the 1.4 restricted 16v have very similar power outputs, so its hard to understand why rover would bother using the 2 different powerplants.

if all else fails, have a look at the engine number, should begin either k11 or k14 respectively.

as for releasing the power, is the ECU not different also?

empsburna · Post by **empsburna** » Mon Sep 17, 2007 2:55 pm

I thought they only used the 1.4 16v DOHC in the 25.

I didn't realise they did a 1.1 in the 25 too, you learn something new everyday!

bjrespect · Post by **bjrespect** » Mon Sep 17, 2007 6:57 pm

1.1 is a 8v

Leo · Post by **Leo** » Thu Sep 20, 2007 10:24 pm

And there were 1.4 8v in the mk3 200. Dunno if that engine featured in the 25 though.

Just to confuse things