Muz's Escort RS Turbo Track Car. Bumper painted and fitted.
#1201
Advanced PassionFord User
Looks great Murray, well done. Where did you get those bolts from? Once the tailgate is on surely it's done, no more?
#1203
Wye Valley Hardcore
Thread Starter
Yeah, when the boots on there's not much else I want to do to it. It'all be R&D then.
The bolts are just M6 countersunk bolts on motorcycle fairing washers.
The bolts are just M6 countersunk bolts on motorcycle fairing washers.
#1206
Wye Valley Hardcore
Thread Starter
Well, Ive been away from forums for while after a few (massive) life changes but thought Id give an update. The car was built, mapped and driven all of last year and is now undergoing a big strip down and rebuild 😂
All of the old alloy work has completely gone and is currently being re-designed. And we also have a new engine to build.
All of the old alloy work has completely gone and is currently being re-designed. And we also have a new engine to build.
The following 3 users liked this post by muz:
#1209
Wye Valley Hardcore
Thread Starter
A lot of people have been messaging me since they found out what head Im using on the build, most of them asking how much to sell it. So, a little more info as it seems to be scarce. I cant even tell you if this head is standard as Ford used them or has been ported by a third party as no one has the information and finding another to compare it to would be difficult.
Firstly, this head is rare. Only a handful seem to be in circulation. I know of only two in the UK, one being mine. One in France and one in Hungary. There are also, Im told, a handful in the USA. Ian Howell of Area Six has only ever seen one in his career some years ago and hes one of the top Zetec Turbo engine builders out there. Some tuners Ive spoken to didnt even know it existed.
This head goes by a few names. The Initial Development First Casting and Zeta Prototype. One things for sure, its no normal Zetec Head. It should also have a different cam cover, unique to this head, but unfortunately I dont have it. Thats also why although a regular Zetec cam cover fits, the central mounting holes between the spark plugs are drilled in different locations.
Its also been referred to as a Motorsport Head as Cosworth did recast a batch of heads with more material around the spark plug recess as a few early heads cracked on the works cars. However, as far as Im aware, this head was never used for motorsport by Ford, although it is sort after by American drag racers.
Inlet Side- the Inlet ports are huge in comparison to a standard Zetec Silver Top head. The ports measure 66x34mm compared to the normal heads 46.5x30.5mm. The bolt pattern is also different as a different inlet manifold was used with these heads and a standard manifold wont bolt up. This includes my genuine WRC inlet manifold, confirmation that this head would not have been for WRC. Its a good manifold...if you can find them. They are just as rare as the heads themselves.
The head also features a threaded port below the main port which jets directly into the combustion bowl.
Exhaust Side - exhaust ports are also larger, but not quite so significantly, which is strange as at high power levels its the exhaust side which struggles rather than the inlet. Ports are 41.8x34.5mm compared to 39.8x33mm. Exhaust manifold stud spacing is the same on both heads.
Casting - the head has no Ford casting logo or date stamp anywhere and its a much cleaner looking casting. The Zetec code 958M 6099 is cast on the inside rather than the outside and a hand stamped number 28 along side a cast B is between 2-3 spark plugs. The casting its of is thicker in places, sometimes by as much as 4mm, although, the material around the cam followers is the same on both heads. It uses standard Silver Top sized cam followers, camshafts, cam caps etc. The casting has less rough cast marks but unsure if these were removed at a later date. There is more material around the spark plug seats and this area in general. Valve seats are also larger on both inlet and exhaust for bigger valves, 33.5mm inlet and 30mm exhaust on this head.
The combustion chambers on the heads are also slightly different shapes. They are perfectly round and measure 84.7mm across on the prototype head and being squared off 81.8mm on the standard head meaning the compression ratio will be different.
Its also hard to tell in the pics but looking into the head through the thermostat housing hole there is more meat on the casting around the valves on the prototype head.
The water jackets openings are also different. Larger on the outsides but smaller through the centre and feature and additional cut out for a jacket on the bottom left as view on the picture.
Both heads share an identical thickness of 133.36mm.
Im going to remove the valves and springs from the standard head and compare the bare weights at some point.
some pics
Firstly, this head is rare. Only a handful seem to be in circulation. I know of only two in the UK, one being mine. One in France and one in Hungary. There are also, Im told, a handful in the USA. Ian Howell of Area Six has only ever seen one in his career some years ago and hes one of the top Zetec Turbo engine builders out there. Some tuners Ive spoken to didnt even know it existed.
This head goes by a few names. The Initial Development First Casting and Zeta Prototype. One things for sure, its no normal Zetec Head. It should also have a different cam cover, unique to this head, but unfortunately I dont have it. Thats also why although a regular Zetec cam cover fits, the central mounting holes between the spark plugs are drilled in different locations.
Its also been referred to as a Motorsport Head as Cosworth did recast a batch of heads with more material around the spark plug recess as a few early heads cracked on the works cars. However, as far as Im aware, this head was never used for motorsport by Ford, although it is sort after by American drag racers.
Inlet Side- the Inlet ports are huge in comparison to a standard Zetec Silver Top head. The ports measure 66x34mm compared to the normal heads 46.5x30.5mm. The bolt pattern is also different as a different inlet manifold was used with these heads and a standard manifold wont bolt up. This includes my genuine WRC inlet manifold, confirmation that this head would not have been for WRC. Its a good manifold...if you can find them. They are just as rare as the heads themselves.
The head also features a threaded port below the main port which jets directly into the combustion bowl.
Exhaust Side - exhaust ports are also larger, but not quite so significantly, which is strange as at high power levels its the exhaust side which struggles rather than the inlet. Ports are 41.8x34.5mm compared to 39.8x33mm. Exhaust manifold stud spacing is the same on both heads.
Casting - the head has no Ford casting logo or date stamp anywhere and its a much cleaner looking casting. The Zetec code 958M 6099 is cast on the inside rather than the outside and a hand stamped number 28 along side a cast B is between 2-3 spark plugs. The casting its of is thicker in places, sometimes by as much as 4mm, although, the material around the cam followers is the same on both heads. It uses standard Silver Top sized cam followers, camshafts, cam caps etc. The casting has less rough cast marks but unsure if these were removed at a later date. There is more material around the spark plug seats and this area in general. Valve seats are also larger on both inlet and exhaust for bigger valves, 33.5mm inlet and 30mm exhaust on this head.
The combustion chambers on the heads are also slightly different shapes. They are perfectly round and measure 84.7mm across on the prototype head and being squared off 81.8mm on the standard head meaning the compression ratio will be different.
Its also hard to tell in the pics but looking into the head through the thermostat housing hole there is more meat on the casting around the valves on the prototype head.
The water jackets openings are also different. Larger on the outsides but smaller through the centre and feature and additional cut out for a jacket on the bottom left as view on the picture.
Both heads share an identical thickness of 133.36mm.
Im going to remove the valves and springs from the standard head and compare the bare weights at some point.
some pics
#1210
Wye Valley Hardcore
Thread Starter
Theres a lot of bad/mis information about the Mountune CGI Zetec blocks. One of which is their weight with some claims of them being 20% lighter than a standard road block. Here are the two weighed (crudely on a bathroom scales) back to back. The Compacted Graphite Iron Block coming in at 31.6kg and the standard Silver Top block 34.5kg, thats 8.4% lighter. Although, the CGi block does have extra cast material at the rear in the form of the oil filter take off, whereas the silver top does not have this. I suspect a standard Black Top would be slightly heavier again putting weight more around 10% lighter. Still, 3kg is a lot in real terms when the block is destined for WRC and the fact the CGI block is significantly harder/stronger than a standard block...or is that just another myth.
Ive had a spare engine for about 8 years now and always planned to use it as a base for a Zetec Turbo in the future. It was apparently from a 20k mileage auto (arent they all...) but the original block paint and overall condition got my attention and I bought it. Turns out, he may not have been lying. Utterly spotless engine and still all original dimensions.
Although I now have a much better CGI block and only needed the end plate and oil squirters for my build, the crank is far better than the one supplied with my other engine and its a handy spare block on its original 84.8mm bore.
Also stripped down my dry sump pump and gave it a good clean. Good job, too. It was full of grit!
Ive had a spare engine for about 8 years now and always planned to use it as a base for a Zetec Turbo in the future. It was apparently from a 20k mileage auto (arent they all...) but the original block paint and overall condition got my attention and I bought it. Turns out, he may not have been lying. Utterly spotless engine and still all original dimensions.
Although I now have a much better CGI block and only needed the end plate and oil squirters for my build, the crank is far better than the one supplied with my other engine and its a handy spare block on its original 84.8mm bore.
Also stripped down my dry sump pump and gave it a good clean. Good job, too. It was full of grit!
#1212
Advanced PassionFord User
Glad youre back on with this pal. Typically detailed write up. Whats your plan with the head? With inlets that size its going to need opening up on the exhaust side surely? Do you know anywhere that can x-ray it for you? Itll give you exact dimensions for porting? Could Rick Wood guide you?
#1213
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Glad youre back on with this pal. Typically detailed write up. Whats your plan with the head? With inlets that size its going to need opening up on the exhaust side surely? Do you know anywhere that can x-ray it for you? Itll give you exact dimensions for porting? Could Rick Wood guide you?
#1214
Advanced PassionFord User
#1215
Advanced PassionFord User
Muz what you want to do is get a mould made and sand cast the head then sell them as either rough cast or the finished artical if you could be arsed. I would buy a rough cast if they were priced sensibly not with no cossie tax added lol. Iam sure there is a lad on here who made Lacey dry sump pans and they looked very good. You could make yourself a few bob as I would pay Ł4/500 for a unmachined one.
Cheers paul
Cheers paul
#1216
Advanced PassionFord User
A bit of info on the head , I think it was off an early American production car as syzbk had his come with the inlet manifold and ford gasket with a proper ford part number. The head is very rare in terms of finding out which car if any it came off and how many were produced. Esslinger produce custom made heads for Shaun Carlson drag Ford Focus and again we don't know how many were cast but they are very rare , not even many yanks have seen them.
The info on there origins seems to be non existent so it's good that your sharing info about what you know.
Looking forward to seeing the engine built up and the car which it will be going in .
Cheers paul
The info on there origins seems to be non existent so it's good that your sharing info about what you know.
Looking forward to seeing the engine built up and the car which it will be going in .
Cheers paul
#1218
Wye Valley Hardcore
Thread Starter
#1219
Wye Valley Hardcore
Thread Starter
A bit of info on the head , I think it was off an early American production car as syzbk had his come with the inlet manifold and ford gasket with a proper ford part number. The head is very rare in terms of finding out which car if any it came off and how many were produced. Esslinger produce custom made heads for Shaun Carlson drag Ford Focus and again we don't know how many were cast but they are very rare , not even many yanks have seen them.
The info on there origins seems to be non existent so it's good that your sharing info about what you know.
Looking forward to seeing the engine built up and the car which it will be going in .
Cheers paul
The info on there origins seems to be non existent so it's good that your sharing info about what you know.
Looking forward to seeing the engine built up and the car which it will be going in .
Cheers paul
#1221
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12-08-2015 05:53 PM