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Post by FFS Corders on Aug 1, 2018 12:32:58 GMT
Sounds like a decent list
From what I have read, avoid silicon for itbs to manifold and go for something hard giggity
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Post by scottydugg on Aug 1, 2018 13:12:20 GMT
Might be worth adding some radiator flush to neutralise anything you can't flush out. It doesn't cost a lot, no harm in trying.
I took my radiator out and ran water through it on it's side, fair bit of prarrie canoe came out, but then my coolant was very brown.
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Post by Bilbo on Aug 1, 2018 13:40:49 GMT
Sounds like a decent list From what I have read, avoid silicon for itbs to manifold and go for something hard giggity Yeah does seem like more potential for vac leaks, especially as the two sides you'll be connecting together will probably not be identical in size. I know a guy who has said he could potentially get some guys at his work to weld up some flanges as required. I think that's the best option really. |
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Post by Bilbo on Aug 1, 2018 13:41:39 GMT
Might be worth adding some radiator flush to neutralise anything you can't flush out. It doesn't cost a lot, no harm in trying. I took my radiator out and ran water through it on it's side, fair bit of prarrie canoe came out, but then my coolant was very brown. Yeah good idea, there was a load of bits floating in it at first, mainly gone now but it won't hurt to give it a try. |
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Post by joeytalent on Aug 1, 2018 15:45:10 GMT
I tried silicone first - it was a disaster - forever chasing air leaks. Version two was solid flanges, reusing the boots from the motor bike - way better!
For mapping; alpha-n is easy, although the hybrid mode that Megasquirt has is awesome... If you can get a smooth enough MAP signal.
I just used a go kart throttle cable with mine.
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Post by wannabe on Aug 1, 2018 16:01:28 GMT
Drop V6 a line - he might have a alloy rad going for a good price if you want to make the swap and be done with! |
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Post by Bilbo on Aug 2, 2018 10:01:06 GMT
I tried silicone first - it was a disaster - forever chasing air leaks. Version two was solid flanges, reusing the boots from the motor bike - way better! For mapping; alpha-n is easy, although the hybrid mode that Megasquirt has is awesome... If you can get a smooth enough MAP signal. I just used a go kart throttle cable with mine. Yeah that was what I was thinking could be an issue. I think some welded up flanges will be better, and also hold everything together much more securely. Not sure if Speeduino has a hybrid mode, but it definitely has Alpha-N. I need to do some reading on it, Alpha-N info online is definitely a bit more scarce than Speed Density. Though I think the principle is essentially the same, it's just based on TPS rather than MAP. I'm just thinking some DIY ITBS and a set of cam will sound naughty. I'm just imagining the idle noise now and I basically have a boner. |
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Post by Bilbo on Aug 10, 2018 10:31:40 GMT
Plan. I have a plan, it will completely change the car. I'm buying the bits to do it this week. Hopefully have it done by the end of the month. It's potentially going to be awesome. Very awesome.
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Post by dadbif on Aug 10, 2018 11:17:22 GMT
I have successfully run TBs using Alpha N on a megasquirt, and as Mr Talent has said, the hybrid mode is brilliant, cannot comment on your ecu, but Alpha N is nothing to be concerned about.. go for it
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Post by moro on Aug 13, 2018 12:26:35 GMT
ITBeeeees!
Few comments:
Does Speeduino come with air temp sensor? You'll need it.
Balance the throttles before going too deep into mapping.
Silicone couplers will be a pain on a cut standard manifold, deffo get some flanges done.
Velocity stacks really help.
Have a spare set of spark plugs ready, you'll kill yours while doing initial setup and cold idle.
It will be awesome!
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Post by joeytalent on Aug 13, 2018 14:40:02 GMT
ITBeeeees! Few comments: Does Speeduino come with air temp sensor? You'll need it. Balance the throttles before going too deep into mapping. Silicone couplers will be a pain on a cut standard manifold, deffo get some flanges done. Velocity stacks really help. Have a spare set of spark plugs ready, you'll kill yours while doing initial setup and cold idle. It will be awesome! Balancing the ITBs is super important to get a nice running engine, and makes tuning the idle so much easier. There's a couple of ways of doing it - either buy a (fairly overpriced - this is the one I have here) synchrometer which gives you a reading for airflow. I did this with my ITBs on the 280Z, and it worked very well, and was a doddle. The other way is to get some silicone tube (I just used some fuel line) and stick it next to the butterfly in each ITB with the engine running, and use your ear to listen to the airflow. You can try and get the airflow to sound the same across all four ITBs - I got it pretty close on my MX5. |
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Post by Bilbo on Aug 15, 2018 13:57:45 GMT
Thanks for the replies all. Definitely looks like a good project. Dadbif yeah I've got an IAT already wired and being used. Moro you're definitely right, flanges are 100% the way to go based on everything I've seen. Joey as for synchrometer I watched a couple of Youtube videos about this, definitely seems a good idea and doesn't seem too tough a job. I don't mind paying 30 quid for one if it means they run well. I do currently have a project on the go for the car that I'm planning to get sorted in the next couple of weeks. Rust repair and ITBs are next on the agenda after that. Had a little meet up last night with a couple of mates that have silver mk1s as well. Had a good drive and a few nice photos:  the-bois by Chris Oldham, on Flickr  IMG_20180814_191546 by Chris Oldham, on Flickr  IMG_20180814_191731 by Chris Oldham, on Flickr  IMG_20180814_205914 by Chris Oldham, on Flickr  IMG_20180814_210535 by Chris Oldham, on Flickr  IMG_20180814_210545 by Chris Oldham, on Flickr  IMG_20180814_210557 by Chris Oldham, on Flickr  IMG_20180814_210204 by Chris Oldham, on Flickr |
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Post by dadbif on Aug 16, 2018 6:51:54 GMT
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Post by moro on Aug 16, 2018 9:58:58 GMT
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Post by dadbif on Aug 16, 2018 13:51:40 GMT
A tad unwieldy, the original dellorto tool, or copy is far simpler to use, the adaptor bung fits neatly into the trumpets, and is very sensitive
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le sigh