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Post by rsnick on Aug 2, 2019 9:06:04 GMT
I had a NB engine fitted to my Eunos by the MX5Restorer a few years ago and I was wondering what this bit isfor if it was connected?
cheers
Nick
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jon
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Post by jon on Aug 2, 2019 9:59:33 GMT
Some context as to where that actually is on the engine might be helpful Looking at where the fuel pipes are, looks like it's on the intake manifold? Hard to tell from the angle but possibly a VICS solenoid?
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Post by rsnick on Aug 2, 2019 11:00:01 GMT
Thanks, it's just ahead of the DTB
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Post by Zed. on Aug 2, 2019 11:10:40 GMT
I'm guessing its a vacuum actuator to operate the vics thinggy? Rich.
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Post by rsnick on Aug 2, 2019 11:24:02 GMT
I'm guessing its a vacuum actuator to operate the vics thinggy? Rich.
That's Ok then as my mk2 engine is without VICS, should I block it off do ya think?
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jon
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Post by jon on Aug 2, 2019 12:48:11 GMT
It is a VICS solenoid, but unless the manifold has been chopped about internally to remove the butterflies then you still have it, it's just not working...
If the butterflies are still there, then depending which way round it's locked at you are either losing top end or bottom end...
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Post by rsnick on Aug 2, 2019 12:59:37 GMT
It is a VICS solenoid, but unless the manifold has been chopped about internally to remove the butterflies then you still have it, it's just not working... If the butterflies are still there, then depending which way round it's locked at you are either losing top end or bottom end... I think I might be confusing VICS with VVT?
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jon
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Post by jon on Aug 2, 2019 13:38:10 GMT
If you don't have a bulge on the front of the inlet cam with a big oil feed, you don't have VVT...
It looks very much like you have VICS - there should be a vac feed that goes to it, and if you look at the back of the inlet manifold there should be an electrical solenoid with which may not be connected to anything.
I can't remember which way round the operation is if it's not connected - but if you can get it to work it will probably give a noticeable bump in performance. All you need is the right plumbing and something that can switch it at about 5000RPM - your EMU may be able to do this...
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Post by rsnick on Aug 2, 2019 15:21:58 GMT
If you don't have a bulge on the front of the inlet cam with a big oil feed, you don't have VVT... It looks very much like you have VICS - there should be a vac feed that goes to it, and if you look at the back of the inlet manifold there should be an electrical solenoid with which may not be connected to anything. I can't remember which way round the operation is if it's not connected - but if you can get it to work it will probably give a noticeable bump in performance. All you need is the right plumbing and something that can switch it at about 5000RPM - your EMU may be able to do this... Great, I'll go have a looksee and report back - exciting, yet more pwr
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jon
Chats A Lot
Posts: 270
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Post by jon on Aug 2, 2019 16:16:19 GMT
You will likely need the plug, the vac hoses and the funny filter thing to get it to work, but these aren't expensive..
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Post by FFS Corders on Aug 2, 2019 21:54:36 GMT
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Post by FFS Corders on Aug 2, 2019 21:55:44 GMT
if it's not got any power going to the solenoid at the back of the engine, then it's locked in the high RPM position - so you're losing loads of driveability at low revs
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Post by rsnick on Aug 3, 2019 13:18:58 GMT
if it's not got any power going to the solenoid at the back of the engine, then it's locked in the high RPM position - so you're losing loads of driveability at low revs Really interesting read and will be looking at doing that. Right now however, I am trying to fix a problem that has been going on for some time. My car is hard to start...sometimes. Hot or cold or leave for a few minutes or 20 it takes a while to get started. It turns over ok just can be reluctant to fire up. Recently changed the fuel pump relay to no avail. The garage who looks after the can - a small 2-man outfit with race-prep experience - is puzzled but has found a way of starting it when it is being difficult. Turn key and crank for a few turns, let go and turn again and it will start. Not ideal and I want to fix this! Why I was asking about the 'mystery' bit was me trying to eliminate any other source of error. The MX5Restorer just said, when I picked up the car from its engine swap from the original NA to an NB that the 'bit' was an extra vacuum feed and didn't mention VICS at all. Re: driveability at low revs I really hadn't noticed, probably my blower is taking up the slack? Anyway, input gratefully received!
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