24v cosworth questions
#1
Virgin
Thread Starter
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Hi everybody,
I am Dimitri (from Belgium) and this is my first post on Passionford.
8 years ago, i bought and restored (well, i did my best effort) a 2.0 Consul Coupé. Plan was to put a V6 engine in after a few years. That time is now!
I bought a Scorpio (Granada MK3 in the UK) cosworth from 1991 for the engine and other usefull parts. Found a good MT75 (original V6 box). Flywheel from a manual 2.9i so the conversion can begin.
There are a few things i keep asking myself, so i can better ask them here:
I want to use the engine (BOA) as basic as possible. So i'll dump airco (and aico radiator obviously), powersteering, automatic box (and cooler, kickdown-valve) EGR, etc.
• My first question.. Would it be a good idea to use the cosworth radiator with the ATF-connections blanked off, and in combination with the electric fan from the airco radiator instead of the water pump driven one?
• Secondly, i read about shorter multigrooved belts to use when ditching the power steering pump. Does anybody know if there are other options than the gates 58366 belt (it has 5 grooves instead of 6). There are 6 grooved 40" belts on the web, but i cant find cross-reference tables to find parts numbers from the popular manufacturers.
• Is the original engine management remappable? The big airbox is replaced by a k&n Filter. And i would like to open up the exhaust (have to make a custom system anyway). Or woud it run fine with the factory map. Other than that, i am planning no mods. But want a reliable and smooth engine.
• Does removing EGR affect the running of the engine in any way?
hope to hear some opinions.
d
I am Dimitri (from Belgium) and this is my first post on Passionford.
8 years ago, i bought and restored (well, i did my best effort) a 2.0 Consul Coupé. Plan was to put a V6 engine in after a few years. That time is now!
I bought a Scorpio (Granada MK3 in the UK) cosworth from 1991 for the engine and other usefull parts. Found a good MT75 (original V6 box). Flywheel from a manual 2.9i so the conversion can begin.
There are a few things i keep asking myself, so i can better ask them here:
I want to use the engine (BOA) as basic as possible. So i'll dump airco (and aico radiator obviously), powersteering, automatic box (and cooler, kickdown-valve) EGR, etc.
• My first question.. Would it be a good idea to use the cosworth radiator with the ATF-connections blanked off, and in combination with the electric fan from the airco radiator instead of the water pump driven one?
• Secondly, i read about shorter multigrooved belts to use when ditching the power steering pump. Does anybody know if there are other options than the gates 58366 belt (it has 5 grooves instead of 6). There are 6 grooved 40" belts on the web, but i cant find cross-reference tables to find parts numbers from the popular manufacturers.
• Is the original engine management remappable? The big airbox is replaced by a k&n Filter. And i would like to open up the exhaust (have to make a custom system anyway). Or woud it run fine with the factory map. Other than that, i am planning no mods. But want a reliable and smooth engine.
• Does removing EGR affect the running of the engine in any way?
hope to hear some opinions.
d
#2
I've found that life I needed.. It's HERE!!
iTrader: (1)
Join Date: Nov 2004
Location: Kent
Posts: 1,057
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Removing the EGR is no problem
The std ECU could be re-mapped but if your planning no mods besides what you have said there is no need
Don't make the exhaust too large in diameter if your gong to use the std ECU they just don't like it and don't forget to make sure you have the Lambda bosses in the system as you will need the O2 sensors for the std ECU.
Not sure about the belt
Using the granada rad is ok but the A/C fan might not be good enough to keep it cool but fitting an electric fan is a good idea.
Hope that helps
The std ECU could be re-mapped but if your planning no mods besides what you have said there is no need
Don't make the exhaust too large in diameter if your gong to use the std ECU they just don't like it and don't forget to make sure you have the Lambda bosses in the system as you will need the O2 sensors for the std ECU.
Not sure about the belt
Using the granada rad is ok but the A/C fan might not be good enough to keep it cool but fitting an electric fan is a good idea.
Hope that helps
#3
Virgin
Thread Starter
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Thanks for the reply Mark,
It surely is a good starting point. Was doubting about the fan myself, but maybe, considering the better airflow if the airco radiator is gone, the fan could be sufficient.
A better option woud be a fan i can place behind the radiator, or is it just as simple as switching the wires and running the fan in opposite direction?
Also... i am planning on using the complete rear end of the Cosworth (for the rear vented disks and LSD). Should be fairly easy to fit at first sight. But i can't seem to find a solution for one problem. The speed sensor. I believe the diff is 1,64. So there are no speedo gears to compnsate for it. Speedo is no problem, i am going for an aftermarket dash anyway. But that is not the only thing using the speed sensor.
If possible i would use my trip meter and cruise control. CC, i guess is no problem as it does'nt use the speed, but only the signal. It can't be a problem if it thinks i am driving 60 if it is actually 80. the only thing i can think of is that the lower speed limit for its operation is higher than normal.
But the trip computer does use the speed, does it? So it won't read a correct fuel consumption.
Are there any other functions i am not aware of, that use the speed sensor? I read stories about engines stalling if no VSS is connected. But i assume, if it gets 'a' signal, it if fine? Does'nt have to be the correct signal..?
d
It surely is a good starting point. Was doubting about the fan myself, but maybe, considering the better airflow if the airco radiator is gone, the fan could be sufficient.
A better option woud be a fan i can place behind the radiator, or is it just as simple as switching the wires and running the fan in opposite direction?
Also... i am planning on using the complete rear end of the Cosworth (for the rear vented disks and LSD). Should be fairly easy to fit at first sight. But i can't seem to find a solution for one problem. The speed sensor. I believe the diff is 1,64. So there are no speedo gears to compnsate for it. Speedo is no problem, i am going for an aftermarket dash anyway. But that is not the only thing using the speed sensor.
If possible i would use my trip meter and cruise control. CC, i guess is no problem as it does'nt use the speed, but only the signal. It can't be a problem if it thinks i am driving 60 if it is actually 80. the only thing i can think of is that the lower speed limit for its operation is higher than normal.
But the trip computer does use the speed, does it? So it won't read a correct fuel consumption.
Are there any other functions i am not aware of, that use the speed sensor? I read stories about engines stalling if no VSS is connected. But i assume, if it gets 'a' signal, it if fine? Does'nt have to be the correct signal..?
d
#4
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
If its a road car the egr does matter. Yes it can be removed but the egr function is also part of the fuel map. So at cruise Speed the engine will run lean. Unless you can find someone that can remap the ecu it's best to leave the egr function on.
#6
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Mine has no vss connected, due to mis placing the cable. It is possible to get it to idle ok, but I do get random stalls.
Cable now found so hopefully that will fix it
Cable now found so hopefully that will fix it
#7
Virgin
Thread Starter
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Thanks for the replies so far.
Cooling fans are sorted. I have a BOB radiator and dual fans.
There will be a VSS connected, just not the correct number of pulses. So i hope that will be no problem for the ecu.
Thanks for the advice about the egr.
Cooling fans are sorted. I have a BOB radiator and dual fans.
There will be a VSS connected, just not the correct number of pulses. So i hope that will be no problem for the ecu.
Thanks for the advice about the egr.
Trending Topics
#8
Virgin
Thread Starter
![Default](https://passionford.com/forum/images/icons/icon1.gif)
More questions:
I am (almost obsessively) trying to make fuel economy best as possible with this engine. I realize a granada, or this engine is not the best choice if going for economy. But i want the best of both worlds. Also, reduced power loss is available power when you want it.
To reduce power loss, i allready planned the removal of the auto box, airco pump, power steering pump.
Original fan will be replaced bij electric fans.
Higher fifth gear to lower cruising RPM
Car will be lowered by 40mm
2.8 flywheel (i know there are different opinions about the effect of lighter flywheels on fuel economy)
My car is 200Kg lighter than the scorpio, but the scorpio has less drag
Keeping Cruise Control
Tyre pressure monitor system (The only way for me to actually check them)
Replacing all the lightbulbs exept for main beams to LED
Replacing the alternator by a lighter one (the car is a consul, so the simple version of the granada. It has a very basic electrical system)
Hoping to end up with a fuel economy of 24mpg or better after these mods. You guys think that is realistic? Or maybe other tips to improve mileage?
I am (almost obsessively) trying to make fuel economy best as possible with this engine. I realize a granada, or this engine is not the best choice if going for economy. But i want the best of both worlds. Also, reduced power loss is available power when you want it.
To reduce power loss, i allready planned the removal of the auto box, airco pump, power steering pump.
Original fan will be replaced bij electric fans.
Higher fifth gear to lower cruising RPM
Car will be lowered by 40mm
2.8 flywheel (i know there are different opinions about the effect of lighter flywheels on fuel economy)
My car is 200Kg lighter than the scorpio, but the scorpio has less drag
Keeping Cruise Control
Tyre pressure monitor system (The only way for me to actually check them)
Replacing all the lightbulbs exept for main beams to LED
Replacing the alternator by a lighter one (the car is a consul, so the simple version of the granada. It has a very basic electrical system)
Hoping to end up with a fuel economy of 24mpg or better after these mods. You guys think that is realistic? Or maybe other tips to improve mileage?
Thread
Thread Starter
Forum
Replies
Last Post