high rpm on 16v

Level 6 User Joined: 26 Jan 2005 Posts: 159

my 1.8 16v clio is revving @3400 @60mph in 5th is this normal as it seems too high, likely causes- wrong box

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

thats a likely cause

Retroholic Joined: 12 Feb 2004 Posts: 5685

Sounds high to me

Spammer Joined: 27 Jul 2004 Posts: 5717

what if the clutch is slipping ,that might be a cause as well might it not Wink

Level 6 User Joined: 26 Jan 2005 Posts: 159

thanks, how can i identify which box i have and which i need? wheres the serial/ model no.

Spammer Joined: 27 Jul 2004 Posts: 5717

dialogys would be a good source to identify bits on ur car .

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

shou8ld have a JB3 on it, if its JB1 then its a 1.4 box.

There are different JB3 boxes though but look for JB3 1st.

Level 6 User Joined: 26 Jan 2005 Posts: 159

cheers Chris H, dont mean to be dull but have you any pics of where the JB3 will be on the box?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

on the top of the box towards the back, should be white and red metal tag.

No pics sorry.

Level 6 User Joined: 26 Jan 2005 Posts: 159

yep got it its got this on it JB3091
C002663
From what you were saying before this seems right but doesnt answer the high revs, pretty sure the clutch is OK and if it was slipping it would smell bad wouldnt it?

Sorry to go on but its really bugging me

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

right box. If the clutch was slipping it would do it often and wouldn't just sit 400rpm high all the time.

The clios are lower geared than the 19's and without a clio 16V handy I can't tell you what revs it should be doing.

You can if you wish stick another 5th gear on the box, its pretty easy, just need to pop the end cover off with the box in situ and get the gear off.

Level 6 User Joined: 26 Jan 2005 Posts: 159

I cant thank you enough mate, the idea of removing and replacing 5th gear is interesting, but cant find a reference to it in my haines.

Is it likely that this is the problem ( i know it is not easy when the cars half way across the country) Renault themselves seem totally unable to tell me

Is it a difficult job?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

If the rest of the box ratios are fine for you then replacing the 5th gear is the way to go. The haynes won't detail anything as they are pretty useless.

The black/silver end case on the bos, the tin bit is held on by 3 13mm bolts. With this removed 5th gear is exposed.

So you need to undo the nut on 1 shaft and the end bolt on the other remove the gears and replace with other 5th gears from another car.

Try asking on cliosport about what revs their cars do at the same revs, it may just be normal.

Level 6 User Joined: 26 Jan 2005 Posts: 159

thanks again, dont suppose you've got pics?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

nope sorry.