Search found 229 matches

by 1970 cortina GT
Sun Sep 16, 2018 9:25 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Yes I ran a separate ground from the tank to the battery to be certain. The sender seems to read accurately, the gauge seems to work correctly, the voltage stabilizer seems to work correctly . There really isn’t much else to it but it still isn’t giving an accurate reading . I have the sender ou...
by 1970 cortina GT
Sun Sep 16, 2018 7:32 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

I’ll give that a try and let you know, appreciate your advice.
by 1970 cortina GT
Sun Sep 16, 2018 6:30 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Hi Pete, I’m using a MK1 fuel gauge, a new MK1 voltage stabilizer and a new MK1 20 ohm full, 200 ohm empty fuel sender. I get a reading on the gauge of half tank when it’s actually full, despite a reading of 20 ohms. I get the same, half tank reading when it’s actually full when I try hooking ...
by 1970 cortina GT
Sun Sep 16, 2018 3:31 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

So I get 12 volts to the voltage stabilizer. I get 5 volts out of the voltage stabilizer. I have the sender out and it reads 20 full and 200 empty when I move it manually. I have hooked up my MK2 fuel gauge using the MK1 wiring harness and that reads half full when I manually move the sender arm to ...
by 1970 cortina GT
Mon Sep 10, 2018 6:48 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Ok I’ll check when I’m back home on the weekend, voltage stabilizer is new so I’ll check my connections. Thanks Pete I’ll let you know what I find.
by 1970 cortina GT
Mon Sep 10, 2018 3:22 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Hi Pete, so I have 3 volts at the sender, 1.8 volts at the gauge. My son is currently at school and has done a chart, you probably understand it better than me but I’m not sure from the figures what the issue is. Thanks for looking at it. http://www.enfostuff.com/forum/userpix/485_217007E7DEEC4609...
by 1970 cortina GT
Sun Sep 09, 2018 7:07 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Any tips here will be welcomed. So I have installed a new sender unit and with a full tank I get 20 ohms but still get a reading on the gauge as half a tank? A little confusing, I tried a gauge out of a MK 2 and get the same reading so I’m pretty sure the gauge is ok. I thought it might be a probl...
by 1970 cortina GT
Tue Sep 04, 2018 8:57 pm
Forum: Technical Discussion
Topic: SU spacer on twin cam
Replies: 5
Views: 3073

Just an update to anyone that is interested. I removed the section between the carbs and the head and the difference is black and white. The increase in power is quite something. I have adjusted the timing and now I have it running at about 14 BTDC. The idle is not as smooth but I can probably get s...
by 1970 cortina GT
Sun Aug 12, 2018 12:11 pm
Forum: Technical Discussion
Topic: A question for the engine builders.
Replies: 13
Views: 5426

So it looks like the sprockets and cams are correctly aligned, markers line up and I can just about make out an EX on the exhaust cam sprocket. Number 1 and 4 are slightly open so I think I’m good here, thankfully. I guess I’ll look up the correct valve clearances whilst they are accessible. htt...
by 1970 cortina GT
Sat Aug 11, 2018 6:04 pm
Forum: Technical Discussion
Topic: A question for the engine builders.
Replies: 13
Views: 5426

So if I remove the rocker cover I should be able to check the alignment marks on the cam sprockets when at tdc , from what I read they should be horizontal and pointing at each other if correct. I see what you mean by ‘ ballpark’ accuracy on the screwdriver test, room for error there. I’ll set...
by 1970 cortina GT
Fri Aug 10, 2018 6:43 pm
Forum: Technical Discussion
Topic: A question for the engine builders.
Replies: 13
Views: 5426

Ok so with a screwdriver in number 1 piston my pulley alignment shows 10° with the screwdriver at its highest point. So that means my timing is actually at about 12° ? So whilst I am pleased that the timing makes more sense should I be concerned that the timing doesn’t line up to zero with the s...
by 1970 cortina GT
Fri Aug 10, 2018 8:51 am
Forum: Technical Discussion
Topic: A question for the engine builders.
Replies: 13
Views: 5426

Thanks for the replies. The timing marks do move when the rpms increase. I am using a Lucas distributor with a vac advance but I have this just open, nowhere to attach it to, could this effect it? Is it better to plug this off? Interestingly enough, the rpms are lower on the gauge the more advanced ...
by 1970 cortina GT
Fri Aug 10, 2018 7:10 am
Forum: Technical Discussion
Topic: A question for the engine builders.
Replies: 13
Views: 5426

A question for the engine builders.

I am trying to get my SU powered twin cam running better. I am pretty certain that I have the carbs balanced and the mixture good. I was aiming for around 12 BTDC, according to info I have researched. The only way I see to be able to get it to run half decent, though still under powered, is to have ...
by 1970 cortina GT
Wed Jul 25, 2018 12:36 pm
Forum: Technical Discussion
Topic: SU spacer on twin cam
Replies: 5
Views: 3073

Good information thanks. I don’t know if there is anything in the carbs I can change , just doesn’t seem to have much power when I compare it to my Weber twin cam in the MK2. Difficult to get a spec for the SU set up I guess.
by 1970 cortina GT
Mon Jul 23, 2018 8:52 pm
Forum: Technical Discussion
Topic: Cortina MK1 fuel sender.
Replies: 34
Views: 13052

Ok I lied, it’s the first one you said there Pete , the C5BH. Took the thing apart agin, actually starting to like the taste of gas..... it looks in half decent shape but I get about 40 ohms full and about 120 empty. I’m guessing it’s shot. http://www.enfostuff.com/forum/userpix/485_29A6F5CD14...