Coonper 0 Posted March 29, 2008 Can anyone identify what distributor this is? Ive heard of people saying you need a spacer or something?? And what the hell is this?? Share this post Link to post Share on other sites
Tom Fenton 1,548 Posted March 29, 2008 The top picture is the standard Mi16 HT cap. It is not a distributor as such, as the rotor arm inside is driven directly off the end of the inlet camshaft. The lower picture is showing a resistor, either for dim-dip headlights or for the "slow" cooling fan speed. Share this post Link to post Share on other sites
Coonper 0 Posted March 29, 2008 Aha! Cheers mate! Very helpfull! So why would you use the 8v distributor and spacer if you can use the 16valve one?? Share this post Link to post Share on other sites
Mikey G 3 Posted March 29, 2008 Depends on what managment system you use, if doing an Mi conversion with the 8v loom and ecu you need to run the 8v dizzy for advance and retard on the timing. The Mi uses a fixed dizzy and the ECU sorts out the timing with the crank position sensor in the system. Share this post Link to post Share on other sites
Coonper 0 Posted March 29, 2008 How can i determine which loom has been used, and which ecu i have?? Are there any notable differences?? Share this post Link to post Share on other sites
Mikey G 3 Posted March 29, 2008 (edited) The Mi16 ecu is much bigger than the 8v unit and will have Motronic pressed into its casing. What are the circumstances as to why you are asking the question? Do you have an engine and loom for a conversion? Edited March 29, 2008 by Mikey G Share this post Link to post Share on other sites
Coonper 0 Posted March 29, 2008 Well i would just like to know a little bit more about my car really. And also, i cannot understand why it has an ecu. Its running on carbs... If i get my carbs set up on RR will i need to do anything to the ECU?? Share this post Link to post Share on other sites
Mikey G 3 Posted March 29, 2008 So it looks like you have carbs fitted but the Mi loom and ignition systems remain, if your just looking at getting the fueling setup then it will be fine but your ignition advance will not be adjustable without a remap of the ecu which will be expensive and difficult. What people normally do with this conversion is junk the Mi wiring and fit 8v management with the 8v dizzy and spacer so you can manually dial in the timing if needed. Another option is keep the Mi dizzy and fit a standalone ignition management but again that is an expensive route. Share this post Link to post Share on other sites
Coonper 0 Posted March 29, 2008 So what your saying is that it will not run properly without a remap? Unless i use the 1.9 loom and ecu?? What happens if i dont set theignition advance? Pinking and generally rough running?? Share this post Link to post Share on other sites
Mikey G 3 Posted March 29, 2008 I dont know much about them in that respect, the standard ignition map may work very well but you have no scope for adjustment if its needed. I think its a case of see how it goes. Share this post Link to post Share on other sites
Coonper 0 Posted March 29, 2008 I dont know much about them in that respect, the standard ignition map may work very well but you have no scope for adjustment if its needed. I think its a case of see how it goes. Eek! i dont like the sound of this. I dont want to spend £250 getting my carbs set up on the rolling road, then find out i need a remap as well! Another £250 if not more... Share this post Link to post Share on other sites
Mikey G 3 Posted March 29, 2008 If it was the case you need to make adjustments to the ignition i'm sure you could easily find an 8v system to fit the engine for not a lot of money Share this post Link to post Share on other sites
Daz_C 8 1 Cars Posted March 30, 2008 You don't need an 8v Engine Loom or Managment to run carbs on either engine. All thats required is a distributor adaptor, 8v distributor and associated wiring from the distributor to the ignition amplifier. Depending on which adaptor you use and sourcing of secondhand dizzy you could sort it for less than £100. I have never seen a carbed 16v running using the standard managment to run the ignition side. May be interesting to see the results on the rollers. I dont want to spend £250 getting my carbs set up on the rolling road, Bloody Hell where are you going to spend £250 to get your carbs set up ??? SBC £45 pound plus vat (unless the price has gone up recently) for pretty much aslong as it takes.....within reason. There roller figures aren't that accurate but hey ho your going to get your carbs set up not look at numbers ! Share this post Link to post Share on other sites
jackherer 543 Posted March 30, 2008 I have never seen a carbed 16v running using the standard managment to run the ignition side. May be interesting to see the results on the rollers. I saw that done on a BX 16v a few years ago, it didn't work very well at all, performance was no better than a standard engine IIRC. As the ignition is ECU controlled it doesn't advance very much because it can't see a signal from the AFM or TPS etc. Share this post Link to post Share on other sites
pug_ham 245 3 Cars Posted March 31, 2008 I have never seen a carbed 16v running using the standard managment to run the ignition side. May be interesting to see the results on the rollers. Didn't taffycrook do this on gerlewislewis' old mi for a while but Ger swapped it back to injection because the noise of the carbs was to addictive & thirsty. Can't remember if there was much or any benefit over the injection though. Graham. Share this post Link to post Share on other sites
Coonper 0 Posted March 31, 2008 I had it dyno'd and it ran 173bhp, so there is definitely a benefit over the standard injection, however the carbs are still not set up, and the last car they ran on was a lotus excel... Share this post Link to post Share on other sites
Coonper 0 Posted March 31, 2008 Sorry to bump an old(ish) thread, but i have one more little question... Will i have a rev limiter? If so, what are they set at? Share this post Link to post Share on other sites
pug_ham 245 3 Cars Posted April 1, 2008 Will i have a rev limiter? If so, what are they set at? Not sure if you'll have one but if you have it'll be at around 7200rpm, maybe slightly lower on your rev counter depending on accuracy. I expect with running the Mi ecu you will have a rev limiter though. Graham. Share this post Link to post Share on other sites
