Megane gearbox in a Clio

[Grandpa Joe]

Not the later 6 speed

Would there be any issues fitting this to a Clio Ph1 172?

http://www.ebay.co.uk/itm/99-03-Meg...arts_Vehicles_CarParts_SM&hash=item256f884236

 

[Dr HMS Derv Destroyer]

et me get this right, you want to stick a 1.6 gear'd box on a 2.0 f4r? :s

 

[Grandpa Joe]

That is correct

 

[Dr HMS Derv Destroyer]

imo slightly pointless , i would think the top speed will be reduce considerably.

have a word with Chip on here. he'll be able to tel you the short story of do or dont

 

[Grandpa Joe]

Pointless?! No

I find the ph1 box too long, although they seem spot on for running boost. And you can increase torque to the wheels in a few ways...engine tuning, gear ratios and a smaller rolling radius.

All I need to know is will it fit.

 

[Owen_m]

shorter gear ratios though i should think it'd be fun to drive

 

[Dr HMS Derv Destroyer]

point proven

 

[Jaff.]

That's a jb3 not a jc5.

Will fit no problem but your looking at different ratios. May even be better you never know

 

[ben lee]

dont think it will bolt to the block would need a 1.8 or 2.0l box. also proberly find ratios are crap as its not for a sport.
if a 1.6 16v box fits a jb3 958 for an rsi hasthe same ratios as a ph2 172.

a phase 2 172/182 has a closer ratio box compared to a ph1 172.

would need to check if yours and the replacement box uses the speedo pick up from the box or ABS sensor.

 

[Grandpa Joe]

dont think it will bolt to the block would need a 1.8 or 2.0l box. also proberly find ratios are crap as its not for a sport.
if a 1.6 16v box fits a jb3 958 for an rsi hasthe same ratios as a ph2 172.

a phase 2 172/182 has a closer ratio box compared to a ph1 172.

would need to check if yours and the replacement box uses the speedo pick up from the box or ABS sensor.

Are the bell housing patterns not shared across a few engines? The ratios are great

Correct, they have the same ratios but a 4.06 vs a 3.89 final drive. The one I've linked has the same gear ratios but a 4.21 final drive.

That's what I've been trying to find out. I think its speedo drive which is what I want. It definitely takes the right clutch (non-hydraulic) 26 splines.

Just need to know if it'll bolt up to the block and mounts.

 

[Jaff.]

It will bolt up to the block yes. Mounts, the bottom now is right, and you should be able to use your current mount on the jb3.

jb3's didn't have the circlip cover either btw, so they're more likely to pop a circlip

 

[Grandpa Joe]

It will bolt up to the block yes. Mounts, the bottom now is right, and you should be able to use your current mount on the jb3.

jb3's didn't have the circlip cover either btw, so they're more likely to pop a circlip

Thanks for the info.

I was going to get a cheaper one than the one listed and have it rebuilt. Can the circlip be welded? I'm sure I've heard of that being done.

Bearing in mind I'll only be running about 180bhp. Maybe 210 in the long run.

 

[Jaff.]

Yes it can be welded. Its just like the older jc5s. They only really pop if your wheel spinning a lot anyway iirc.

 

[Grandpa Joe]

Yes it can be welded. Its just like the older jc5s. They only really pop if your wheel spinning a lot anyway iirc.

Ok thanks Not a chance, did all that as a teenager and I don't do 1/4 mile; its all about the corners.

I may leave it as it is and see how it goes, rather than fork out on the rebuild and circlip welding.

 

[ben lee]

will the 4th gearbox mount also fit the non RS boxes?

 

[Jaff.]

will the 4th gearbox mount also fit the non RS boxes?

​Should do, as far as I'm aware all the jb and JC casings are the same

 

[clio ph1 Belgium]

I ran a jb1 from a 1.4 16v , first and second to short , bad fuel economy . But it did fly towards 200 km/u.

 

[ben lee]

might have to get one then my rsi has to much movement even with new mounts.

​Should do, as far as I'm aware all the jb and JC casings are the same