View Full Version : fitting 1.8 8/16v engine
JENGA
11-05-2003, 01:04 PM
Ive got a 1.6 petrol 1988 caddy and concidering fitting an 8/16v engine and 5speed gearbox from mk1/2. Is this a difficult conversion if i have all looms etc? Will it just drop straight in or do i need fabricated mounts?
bohall
12-05-2003, 12:49 PM
I'm actually doing the same with an 88 1.6 diesel caddy. just got a crashed mk2 gti this weekend. As far as i know its plug and play. just make sure that u have all of the looms and the other bits.
Darth Garry
12-05-2003, 02:43 PM
Going from gas to gas shouldn't be a problem at all. The only things that may present a problem is if the new engine requires an ECU etc. Going Gas - Diesel is easy, because you are pretty much just removing stuff, but I heard going Diesel-Gas can be difficult because there are no mounts for the fuel pumps and other such things, and the gas tank has different hoses and stuff. I'm not 100% on this, and would love to hear from any of you diesel-gas converters how difficult it was.
Garry
JENGA
12-05-2003, 03:50 PM
I thought it would be pretty much plug and play. Was looking at a mk2 gti at the scrapyard earlier and all the mounts etc look 2 be the same. Just have to buy a cheap donar car and strip everythin off it.
JENGA
What year is the MK2 Donor ? Wiring will be different on the early cars to the later, they changed 87/88 from K Jet to Digifant (i believe 16v's stayed the same), then the loom changed again in 1990, but if you have all the loom they all can be spliced in to work.
For the engine mounts, you will need the right mount from behind the cambelt from you Caddy engine to fit to the mk2 engine, Use the Caddy middle front & rear mount to the 5 speed box, for the left g/box mount (the one that bolts to chassis leg) you will need any mk1 5 Speed mounting as the 4 speed one will not fit.
That should get you on your way
If you prefer and are not sure of you wiring you could use 2 fuse boxes, the second just for engine management, this second fusebox can be fitted to the left of the orignal and you only use what wires are necessary, and has a couple of advantages. 1. If you get a problem its easier to find and 2. You dont have to lash up/mess with your original box and it only needs 3 wires joining it with the original box as well, Permenant Live, Ignition Live & Earth
stumac
19-05-2003, 10:21 PM
HELLO MATE.I HAVE DONE THE CONVERSION ABOUT 2 YEARS AGO I GOT IN CONTACT WITH BRM MOTORSPORT THEY SUPPLIED A LOOM AND THE EXHAUST MANIFOLD I THINK THE LOOM WAS £80 AND EXHAUST WAS £160 THERE WAS ALOT OF OTHER PROBLEMS TO DEAL WITH DRIVESHAFTS AND SUCH LIKE.
purplebitch
19-06-2003, 12:07 AM
i done the conversion in my golf . had a 1.1 mk1 golf and put a mk2 16v lump in it and it was alot eaisier than i thought it would be also worth doing before you put the engine in is get a stage 2 head for it gas flowed a set of cams forge pistons group a headset and you will have alot of fun
Dub Truk
29-06-2003, 11:49 AM
Im currently ripping the lump from my 1987 GTi PL16V. The car has cruise control. My '82 Caddy is a diesel.
Plans are:
*Swap in 16V motor/tranny (swap diesel 5th gear into GTi gearbox.. .91 vs. .71)
*Swap to Mk2 dash/cluster/MFA/cruise control
A couple of questions, though..
1. The Mk2 has two boxes in the cowl, assuming the larger of the two is the ECU. Whats the other?
2. How do you get the loom to come through the firewall from the fuse panel to under the bonnet? Do you have to cut it? [xx(]
3. Will the Mk2 downpipe work, or do I need a 16V Scirocco unit?
4. What axle configuration is needed for the Caddy to use the 16V gearbox?
Thanks in advance!
squeegy
18-08-2003, 06:37 AM
My brother and I both started with US Spec Caddys. Mine was originally equipped with a low compression 1.7l 4speed manual gasoline engine.
We swapped to a 2.0l using the 3A block and a GTi head. The key to success is getting as much as you possibly can from the donor car. In my case, the high compression would necessitate the control box and all of the other GTi specific items. It was also nice to have the Bentley manuals for both the MkI Rabbit/Caddy and the MKII GTi.
I chose to take the dual outlet manifold, fuel distributor and air cleaner, all of the wiring etc. My brother merged all of the electrical components and wiring loom from the two vehicles.
The engine and transmission were bolt in affairs with no modification. Techtonics makes a downpipe, catalytic converter, and an exhaust system that is specific to the Caddy.
See https://www.techtonicstuning.com/indexs.html
This is the engine after installation. Look closely at the top right under the windshield, you will see the knock sensor computer and ignition amplifier from the GTi.
http://www.imagestation.com/picture/sraid75/p20c3461bf50cb4839cf02ddea4199625/fb5ca124.jpg
This is the Techtonics Exhaust snaking its way out the back. I used their downpipe (Not picutred) connected to their catalytic converter, then to their exhaust. The entire system fit better than the stock system.
http://www.imagestation.com/picture/sraid75/p8a7bb32c1f817aac1d7876461bb3aabd/fb5ca09f.jpg
vBulletin® v3.8.4, Copyright ©2000-2010, Jelsoft Enterprises Ltd.