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Post by boggissimo on Jul 2, 2021 8:38:18 GMT
Yeah, capable I am not! As you can see I haven't got much of a clue. The ad says "Fully tuned and set up on rolling road and ready to bolt straight on. Has been rejetted to suit application, have brand new DanST velocity stacks and rubber connectors"
Had a read of Bilbo's thread and I'm definitely not qualified/brave enough for that!
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Post by batou on Jul 2, 2021 8:50:09 GMT
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Post by atlex on Jul 2, 2021 9:00:57 GMT
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Post by batou on Jul 2, 2021 9:07:11 GMT
Yep, I edited just after forgetting it was for a lefty, depending on trumpet length you might get away with it. The other place to look at is danstengineering as looks like they do a full kit with an ecu, he recommends 50mm to avoid modification to wing/brake cylinder and pipework. I've been considering this myself and put a little money aside to maybe do it after all the other jobs are finished but alas my other car (Scoob) has decided it wants some unplanned engine work. Ar$e. |
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Post by atlex on Jul 2, 2021 9:11:05 GMT
if the car is old enough to get away with it (emissions) I'd try the carb route tho. there aren't that many carbed mx5s in the UK, they are awesome is setup correctly.
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Post by atlex on Jul 2, 2021 9:13:12 GMT
I'm pondering more power! At the moment my NA 1.6 is totally stock, and I'd probably like to stay naturally aspirated, so looking at ITBs. There's a set of Mikuni carbs and all the gizmos apart from ECU on Facebook at the mo for £650, and full kits are more like £2K. But is it worth it? Maybe get 25% more power than stock? THIS  |
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Post by Zed. on Jul 2, 2021 9:37:36 GMT
Yeah, capable I am not! As you can see I haven't got much of a clue. The ad says "Fully tuned and set up on rolling road and ready to bolt straight on. Has been rejetted to suit application, have brand new DanST velocity stacks and rubber connectors" Had a read of Bilbo's thread and I'm definitely not qualified/brave enough for that! be brave, theres plenty of help available and if you copied Bilbo 's setup could probably use his cars ecu 'map' as a startingpoint  iIrc, he said it cost ~£750/800 all in for the conversion (tb's, ecu, wideband etc.) I'm pondering more power! At the moment my NA 1.6 is totally stock, and I'd probably like to stay naturally aspirated, so looking at ITBs. There's a set of Mikuni carbs and all the gizmos apart from ECU on Facebook at the mo for £650, and full kits are more like £2K. But is it worth it? Maybe get 25% more power than stock? THIS if the car is old enough to get away with it (emissions) I'd try the carb route tho. there aren't that many carbed mx5s in the UK, they are awesome is setup correctly. think you're blinded with Retro & jdm ideas  properly setup carburettors vs. properly setup injection (throttlebodies) are worlds apart, drvability / economy / power & torque differences are noticable  Rich. |
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Post by atlex on Jul 2, 2021 9:53:07 GMT
puts the troll mask on. are you saying you can get MORE power from a carb setup ? |
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Post by Zed. on Jul 2, 2021 9:58:14 GMT
puts the troll mask on. are you saying you can get MORE power from a carb setup ? DNFTT   Rich. |
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Post by batou on Jul 2, 2021 10:25:39 GMT
Carb ITB = Great noises, endless faffing
Injection ITB = Great noises, less faffing
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Post by Bilbo on Jul 2, 2021 11:31:38 GMT
Yeah, capable I am not! As you can see I haven't got much of a clue. The ad says "Fully tuned and set up on rolling road and ready to bolt straight on. Has been rejetted to suit application, have brand new DanST velocity stacks and rubber connectors" Had a read of Bilbo's thread and I'm definitely not qualified/brave enough for that! Bold of you to assume I am in any way qualified to do anything I have done haha. "Yeah, capable I am not! As you can see I haven't got much of a clue." - first of all, take this mentality and pop it in the bin, no one is born with the knowledge to do it. I learned everything I've done through Google searches and Youtube lol. I built my entire ITB setup on the driveway with a hacksaw, a Dremel, and some JB Weld 😂 Ry Marsh's old car ran carbs and it was admittedly awesome, however do be careful of these "ready to run" type deals, there's a lot of considerations such as engine spec, did he have cams, head skim, any other engine work? You'll often find that what works perfectly for one setup won't work perfectly for another. Also in regards to engine management, it would be a spark only type deal as the fuel will be done without injectors, I'm not sure a stock ECU can do this? You'll need to factor in a standalone ECU I should imagine? I'm not saying what you are looking at is a bad deal, I think 5s on carbs are great, however I don't see it being crazy amounts easier than an ITB setup. Either way unless you want it to cost loads in labor you'll be needing to get your hands dirty, so don't be afraid of not knowing what you're doing at first, lots of info out there. I didn't know anything about all this stuff, and now I've got a car that runs nicely on ITBs, and gets 5mpg better average than when it was standard 😂 and it's never been touched by a pro mapper. |
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Post by suggs84 on Jul 2, 2021 12:11:56 GMT
I've looked at this too! The 'starter kit' for the Mk1 1800, around £750ish i think appeals to me - i also have next to no mechanical man skills (but do potter about with little jobs on the car ) but love the idea! What is a realistic gain from such a set up? Is the ECU actually needed? I've always had turbo'd cars that i've modified, I know nothing about ITB's etc |
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Post by Zed. on Jul 2, 2021 12:21:19 GMT
What is a realistic gain from such a set up? standard engine etc? not much more than sound & looks.... maybe even loose some torque Is the ECU actually needed? if you want more than sound & looks... if you go for further engine mods then theres more to be gained but turbo is cheaper £ for hp  Rich. |
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Post by boggissimo on Jul 2, 2021 12:48:51 GMT
Bold of you to assume I am in any way qualified to do anything I have done haha. "Yeah, capable I am not! As you can see I haven't got much of a clue." - first of all, take this mentality and pop it in the bin, no one is born with the knowledge to do it. I learned everything I've done through Google searches and Youtube lol. I built my entire ITB setup on the driveway with a hacksaw, a Dremel, and some JB Weld 😂 Ry Marsh's old car ran carbs and it was admittedly awesome, however do be careful of these "ready to run" type deals, there's a lot of considerations such as engine spec, did he have cams, head skim, any other engine work? You'll often find that what works perfectly for one setup won't work perfectly for another. Also in regards to engine management, it would be a spark only type deal as the fuel will be done without injectors, I'm not sure a stock ECU can do this? You'll need to factor in a standalone ECU I should imagine? I'm not saying what you are looking at is a bad deal, I think 5s on carbs are great, however I don't see it being crazy amounts easier than an ITB setup. Either way unless you want it to cost loads in labor you'll be needing to get your hands dirty, so don't be afraid of not knowing what you're doing at first, lots of info out there. I didn't know anything about all this stuff, and now I've got a car that runs nicely on ITBs, and gets 5mpg better average than when it was standard 😂 and it's never been touched by a pro mapper. Yeah, it's not so much I'm afraid of having a go, I did my cambelt etc last year from what I found on Youtube having never done one before.
It's more that I don't really understand what the options are and how they depend on/affect each other, which is why I've been thinking about 'plug and play' kits. I've got events planned for the next few months but was thinking of gathering bits of kit and making a plan of how to upgrade this autumn/winter. Don't want to lose the bulletproof reliability but would like a bit more poke, and if I can do it without going turbo/SC then I can stay in the <1600cc classes for club motorsport. If I go forced induction then I'd be up in the over 2 litre class.
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Post by dickie on Jul 2, 2021 17:00:00 GMT
Hi, After 11 months and two rolling road sessions and a bit a playing and using Autotune my Itb car is almost nice to drive at low speed.
The rolling road has done all the work for 50 Mph and above.
The really difficult bit is the small throttle opening slow speed stuff as well as tuning for warmup the other difficult bit has been the area of the map when the IAT goes up with heat soak.
My tune is almost there, I now have steady AFR readings when stuck in traffic with the IAT at around 60c
The rolling road tuner I used only did a basic set up of the timing, my ecu can be set for individual cells I found the timing was going from 25 before tdc to 8 tdc as I opened the throttle, I have targeted a few of the cells and it now drives a lot better. I think it needs to be put on a rolling road and each cell of the timing tuned with a knock sensor ( I will have to find a different Tuner to work with )
So expect a lot of work and frustration along the way. you will learn loads too.
Weber 40s would be a good option if you can find a good local tuner to set them up properly.
You will not gain much power until you break into the engine and do headwork cams etc rods and piston too.
Welcome to the Madness.
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le sigh