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Building: Dare I say it, a Haynes Roadster, bit by bit!
posted on 9/3/12 at 01:18 AM
Differences between the Ford i4 8v sohc and dohc
So basically I like the extra mpg of the DOHC engine, and the availability compared to others. But reading through my chris gibbs book, it says the
dohc is taller. Can anyone give me any more detail as to how much taller it is and whether it would fit in a haynes roadster? Can the sump be
shortened like the SOHC? Also what kind of mounting arrangement would need to be done? The book says you have to fab something up but I can't
imagine ford would modify the sierra shell/mounting plates just for a different engine.
IMO the DOHC 8v isn't worth entertaining, I was going to use one years ago, but they are prone to head cracking and warping, there is next to no
aftermarket parts for them.
Go for a Zetec, a 1.8 is much more powerful than the 2.0 8v, its lighter, plenty of aftermarket stuff, and cheap....
I have a Escort 2.0 RS2000 16v (pretty similar to the 2.0 DOHC from the Sierra) in my Haynes Roadster. The sump is off the Sierra DOHC, with 35mm
removed off. I have the Saturn Sports Car bonnet with a hump (now called NTS Engineering) and I'm using Megajolt and ZX6R Carbs. My engine
requires no CAT, due to its age and that was a big help when I put it through the IVA.
Honestly a Zetec would have been easier as your not just fitting an engine, you need custom manifolds and the such. But you aren't building a
Haynes if your afraid of a bit of fabrication!
Photo Archive
Building: Dare I say it, a Haynes Roadster, bit by bit!
posted on 9/3/12 at 10:03 AM
The main reason I'm contemplating the DOHC is because I'm going to be looking for a donor, but there are little to no pinto ones left and
there are thousands of twin cam ones.
quote:Originally posted by deezee
I have a Escort 2.0 RS2000 16v (pretty similar to the 2.0 DOHC from the Sierra) in my Haynes Roadster. The sump is off the Sierra DOHC, with 35mm
removed off. I have the Saturn Sports Car bonnet with a hump (now called NTS Engineering) and I'm using Megajolt and ZX6R Carbs. My engine
requires no CAT, due to its age and that was a big help when I put it through the IVA.
Honestly a Zetec would have been easier as your not just fitting an engine, you need custom manifolds and the such. But you aren't building a
Haynes if your afraid of a bit of fabrication!
How high is the bump on your bonnet? And what did you do for engine mounts?
No reason not use a twink sierra as a donor, the MT75 gearbox it uses is a sweet box, a little bulkier than a Type 9, and about the same weight. A
Zetec will bolt right up to it, take a look in my archive for my old MGB with a Zetec and Mt75 box.
The bonnet looks ok, its just an alternative Saturn bonnet for the Haynes Roadster. The engine mounts were made by placing the engine in the ideal
position in the frame, then fabricating mounts to suit. the engine mount rubbers are the popular choice of Landrover V8 mounts.
2.3 out of scorpio balance shaft delete and trottle bodies 200 bhp been done whoever says that you cannot get power out of i4 engine is just
repeating pub talk bit heavy but nothing wrong with it
