Modified bx's

Anything about BXs
User avatar
Over 2k
Posts: 8406
Joined: Thu Jun 22, 2006 11:10 pm
Location: Derbyshire
x 8

Re: Modified bx's

Post by MULLEY »

Probably the cheapest mod would be to just use nitrous, i had toyed with the idea of using it on my TXD, not for outright speed, but just for overtaking acceleration. I did get in contact with a local firm who reckoned that 50bhp extra was possible from the 1.9 n/a lump. I'd personally like to see one working 1st before making a decision, however seeing as my TXD is now a rusty heap, i'll be spending the money i would have spent on NOS to get it welded up.
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.

User avatar
Posts: 268
Joined: Thu Feb 12, 2009 8:01 pm
Location: Australia
x 12

Re: Modified bx's

Post by frog »

My Valver is pretty nippy.

The engine has 10.8:1 CR through decked block and liners.
PeterT stage 1 inlet cam, offset keys on both cams to right the timing after the skim.
PeterT baffled sump, uprated oil pressure spring and larger volume sprocket (uprated oil flow and pressure).

The bottom end has been fully balanced, even bought a few extra rods so we could have a closer starting point to get it perfect without removing too much material.

The head was fully reco'd with 3 angle seat and backcut valves.
My brother also did a little porting unter the valve seats to neaten them up especially where there was some core shift in the casting.

XU9J4z by tyro.chris, on Flickr

It's really crying out for TB's and an ECU..

Build thread over on the 16Valve forum:" onclick=";return false;
1989 Citroën BX 16v
1993 Citroën BX 16v project

User avatar
Mike P
Posts: 459
Joined: Mon Dec 12, 2005 3:15 pm
Location: Leicester

Re: Modified bx's

Post by Mike P »

10 years ago I placed a V6 into a 16V. It was the 90 degree V6 from a 605 but it was just too big for a BX engine bay. It would have meant subframe, front end, inner wings and bulkhead mods and so sold the engine back to the person I bought from it and never tried again.

Somebody on the 16V forum is part way through a V6 conversion using a 406 / Zantia engine but hasnt progressed much on it recently. This engine fits into a 205, so you would just have to connect the hydraulic pump and piping and hoses etc for use in a BX.

Mike P
"F" White Phase 1 16V: 62K miles & seen on TV
"E" Grey Phase 1 16V: Long term project in bits