Yo @BigTom, your avatar says you live in Edinburgh?
I'm in Camborne (lucky me)
Congratulations to vtecmec for winning May/June's Lude Of The Month, with his DIY Turbo BB1 build.
>>> Click Here For Profile <<<

>>> Click Here For Profile <<<

Backbox replacement
Re: Backbox replacement
Yeah just moved down to Carnon Downs a couple of weeks ago. From Kernow originally but been in Scotland the last 12 years.bb1boy wrote:Yo @BigTom, your avatar says you live in Edinburgh?
I'm in Camborne (lucky me)
Bah.
So I bought an oem replacement backbox. After several hours dremeling underneath the car to cut off the seized old nuts I emerged with this - not an original 5th gen box at all. 4th gen?

Furthermore the mid-pipe flange doesn't fit flat to the flange on the new box - the wings where the bolt holes are located are angled towards the rear by a degree or two. I now have no idea whether this was bodged to fit the previous box or if the midpipe isn't oem either. Tried fitting the new box with a new gasket ring but getting tonnes of blowing - not even close to a seal.
Options -
1. Try and hammer the flange on the new box for a better fit.
2. Go buy some gun gum and try and bodge it.
3. Take it to a garage.
4. ???
Any thoughts?
So I bought an oem replacement backbox. After several hours dremeling underneath the car to cut off the seized old nuts I emerged with this - not an original 5th gen box at all. 4th gen?

Furthermore the mid-pipe flange doesn't fit flat to the flange on the new box - the wings where the bolt holes are located are angled towards the rear by a degree or two. I now have no idea whether this was bodged to fit the previous box or if the midpipe isn't oem either. Tried fitting the new box with a new gasket ring but getting tonnes of blowing - not even close to a seal.
Options -
1. Try and hammer the flange on the new box for a better fit.
2. Go buy some gun gum and try and bodge it.
3. Take it to a garage.
4. ???
Any thoughts?
Last edited by BigTom on Wed Jul 09, 2014 5:49 pm, edited 1 time in total.
- vanzep
- Supporter 2016
- Posts: 7142
- Joined: Sun Jan 29, 2012 6:38 pm
- My Generation: 4G
- Location: Edinburgh
- Has thanked: 305 times
- Been thanked: 505 times
does look like a 4th gen backbox
you could try out the 4th gen backbox i have here if your ever back in the boro

you could try out the 4th gen backbox i have here if your ever back in the boro

1996-2000 1993 EG9 Blue Civic 1.6 Vti - Traded in against the BB4
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC
- vanzep
- Supporter 2016
- Posts: 7142
- Joined: Sun Jan 29, 2012 6:38 pm
- My Generation: 4G
- Location: Edinburgh
- Has thanked: 305 times
- Been thanked: 505 times
had a quick look at the aftermarket 4th gen backbox and its slightly angled
1996-2000 1993 EG9 Blue Civic 1.6 Vti - Traded in against the BB4
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC