ned
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| posted on 27/8/03 at 09:21 AM |
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Vauxhall 8v info....
This post is mainly questions for Northy, as he's the only other builder I know using the 8v vauxhall, but i thought I'd drop it in the
forum so anyone in future who wishes to use this engine can look it up..
1.)Having recently gotten my 8v, what can I throw away? I have a pair of weber 45's so presume the stock injection can go? are there any censors
worth holding onto?
2.)Where do you get a manifold for webers for the 8v engine?
3.)Are you building a custom exhaust? I was planning on chopping about the standard manifold that I have with the engine, what have you done/are you
going to do?
4.)My engine has an oil sandwich plate by the filter, and in the donor car had a 7 row oil cooler. I see from your photo archive that yours
doesn't, any ideas as to whether it'll need it?
5.)You mentioned before that the injection engine is better torque and compression ratio wise, any further details/figures on this?
6.)When using the early 8v type dizzy did you need to make up longer ignition leads, or did they fit? (dizzy donor leads or originals?)
7.)Any idea if the 2ltr 8v shares the head with the 1.8 8v, just thinking of weber manifold availability really...
Thats about all I can think of for the moment! All replies appreciated! (as long as they're semi-useful  )
Thanks,
Ned.
[Edited on 27/8/03 by ned]
beware, I've got yellow skin
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Northy
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| posted on 27/8/03 at 08:48 PM |
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Hi Ned, not been feeling to well the last couple of days, but here goes.
1) I'm also fitting twin 45's. I've personally not thrown anything away, but don't think you need any sensors with an old
mechanical (ie bob weight) dizzy. May need some for an ECU type sytem, will see in the future I guess.
2) Demon Tw*ts. Had to buy a new one, couldn't find a second hand jobbie.
3) Yes, sort of. I bought a cheap second hand Tiger jobbie, but it for a Pinto (wrong side), so was just planning on new headers (for now).
4) I think if you use an oil sandwich plate, and mount the standard filter to the bottom of it, it'll stick out too far below the car. I looked
at remote fitting the filter to stop knocking the bottom off the filter, but think it should be ok. Am now thinking of fitting some form of sump
guard. In standard form I don't think they were fitted with oil coolers, and thus shouldn't need one? Was it from a "max
power" machine? 
5) The Injection engine is known as a 2.0 SEH 8 valve. There are others, can't remember at the mo, but a mate of mine who was a mechanic at a
Vauxhall garage said the SEH was better. I may be able to get some figures from him. Otherwise someone on MIGWEB will know.
6) I got new plug leads from the motor factors. I think I got them for the 1.8 carbed engine so they were a little longer. I may have a part number
somewhere.
7) No I don't think it does, unless you can get a 1.8 SEH. The SEH bit is the "high port head". I got a cheep twin 45's
manifold from a guy off the Tiger list who said it was for my engine, but it was for one of the other types. If you look at you head, the inlet ports
are not half way between the top and bottom studs used to bolt the manifold to the head, they are higher than half way point, and thus "high
port head". The one I got had the inlets half way between. Think there is a picture in my archive? not sure.
EDIT
Just looked, and there is a picture of the Inlets, it's called "Vx head" or something like that showing the high ports.
I'll try and get you some more pictures tommorrow night, of the dizzy, inlet manifold and carbs.
EDIT
Hope that helps,
[Edited on 27/8/03 by Northy]
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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david walker
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| posted on 27/8/03 at 09:24 PM |
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1800 head is different (different combustion chamber).
There are large bowl and small bowl pistons the early SE and SEH engines used a 45mm diameter bowl the later NE and C20NE engines used a 57mm diameter
bowl.
The earlier engine obviously has the higher compression.The 8v GTE used the SEH high comp engine throughout its life.
When these engines were popular in motorsport a cheap and effective way to upgrade the head was to fit the 1800 head. It goes straight on, has a
slightly better combustion chamber design and puts the compression up to about 10.5:1 on the SEH engine. Valve sizes are the same. The inlet port
spacing is different between the 1800 and 2000 engines so manifolds are unique to the head type.
Dave Walker, Race Engine Services - 07957 454659 or 01636 671277
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Stu16v
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| posted on 27/8/03 at 11:25 PM |
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Try a company called Yukspeed (Yorkshire somewhere) for the inlet manifold, They also do the bellhousing, chopped sump etc, and as a rule, cheaper
than anywhere else. Address HERE...
The 16v also runs an oil cooler sandwich plate/oil cooler. I junked mine, and replaced it with an oil filter 'stud' from a VX engine
without oil cooler (they just unscrew out of block/oil pump). If its tight, either use a stud extractor, or run a tap up the inside of the hole, then
put a a nut on a suitble bolt, run bolt into hole with new thread, tighten nut onto offending article, and undo bolt. In theory, the whole lot will
come out. If you are in a scrappy, you can have a practise first 
It may be worth looking at ones off Corsas, for some reason they sometimes unscrew with the oil filter.....
The oil cooler isnt needed, and removing the plate *should* give enough clearance. If room is still tight, get yerself an oil filter off a late
Renault (they are all the same AFAIK) which are extremely short, and fit straight on.
HTH Stu.
[Edited on 27/8/03 by Stu16v]
Dont just build it.....make it!
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ned
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| posted on 28/8/03 at 08:43 AM |
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thanks guys, really useful replies there. chassis being picked at weekend so can actually start building properly soon!
cheers,
Ned.
beware, I've got yellow skin
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Northy
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| posted on 28/8/03 at 05:13 PM |
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So....... should I fit a 1800 head to my 2.0 SEH?
Cheers
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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ned
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| posted on 29/8/03 at 09:06 AM |
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what, and have to buy another weber inlet manifold - YES, please do! - and I'll buy the 2ltr weber manifold off you!
Ned
beware, I've got yellow skin
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Browser
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| posted on 2/9/03 at 09:16 AM |
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SOrry I'm very late into thsi thread but in response to the 'which exhaust manifold are you using' query, would the Carlton one fit?
They use the 1.8 single cam motor and are rear wheel drive so it would at least be pointing in the right direction and would have a transmission that
was the right way round. Just a thought.
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ned
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| posted on 2/9/03 at 09:54 AM |
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this may be suitable but remember the exhaust will run under the car so the manifold will need chopping where it goes down and more tube putting in so
not much to gain over modifying a fwd manifold which is what i'll do!
Ned.
beware, I've got yellow skin
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