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ITBs
Sept 17, 2022 19:41:41 GMT
Post by dickie on Sept 17, 2022 19:41:41 GMT
I have used tufnol as a heat isolator between carb and manifold on other vehicles.
Ambient air has been up to 50c on the Mazda which is still a lower temp than the head / cam cover at 80c so the phenolic gasket should stop direct heat transfer.
I have used an infra red thermometer to check various temps.
I have got a few black dots to keep the measurements consistent infra red thermometers do not like shiny reflective surfaces.
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ITBs
Sept 17, 2022 21:11:57 GMT
Post by Zed. on Sept 17, 2022 21:11:57 GMT
Meant to reduce the head-to-manifold heatsoak, other than that they can't do much. and frankly to fully benefit you'd probably also want some heat-isolating washers on the nuts/bolts attaching the manifold to the head. But the heatsoak in the engine bay is massive anyway if there's no airflow. doesn't air flow faster over a hot surface ? I've got a hondata phenolic gasket for the k20 in the mr2 to go on too. When it goes on I'll do some comparison type runs, when it gets hot again. I've got lots of run data from hot days this year. I know all those reasons but with injection the fuel-mist will cool the throttlebodies / manifolding and (unlike carburettors) theres not much else to heat  +1 on the insulation of bolts / studs as these can transmit heat  as to your mr2, it may benefit from the spacer as a lengthened inlet tract? +200hp per 1/4"  Rich. |
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ITBs
Sept 18, 2022 14:40:27 GMT
Post by atlex on Sept 18, 2022 14:40:27 GMT
Meant to reduce the head-to-manifold heatsoak, other than that they can't do much. and frankly to fully benefit you'd probably also want some heat-isolating washers on the nuts/bolts attaching the manifold to the head. But the heatsoak in the engine bay is massive anyway if there's no airflow. doesn't air flow faster over a hot surface ? I've got a hondata phenolic gasket for the k20 in the mr2 to go on too. When it goes on I'll do some comparison type runs, when it gets hot again. I've got lots of run data from hot days this year. I know all those reasons but with injection the fuel-mist will cool the throttlebodies / manifolding and (unlike carburettors) theres not much else to heat +1 on the insulation of bolts / studs as these can transmit heat as to your mr2, it may benefit from the spacer as a lengthened inlet tract? +200hp per 1/4" Rich. I'll already be swapping up to a better intake manifold so that'll be the main difference. Honestly I think with general heatsoak it probably just _slows_ the speed of heatsoaking when the car isn't moving. I'm fairly certain once a car is up to speed the difference in performance is negligible, but on a dyno where the the airflow is _never_ as good as the real thing it's probably helps more. |
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Post by dadbif on Sept 18, 2022 17:45:19 GMT
In my experience heatsoak is at it worst when restarting from hot.
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Post by dickie on Sept 18, 2022 17:59:53 GMT
I am in agreement with Dadbif.
Heat soak also an issue waiting in the starting area for an event, especially when a whoopsee happens delaying the procedings.
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Post by batou on Sept 25, 2022 12:36:11 GMT
Okay, I caved in. I'm a patient man sometimes, but once a seed is sewn into the fabric of my mind its inevitable it will eventually have to happen....  |
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gbuk
Chats A Bit
Posts: 130 
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ITBs
Sept 25, 2022 15:35:34 GMT
batou likes this
Post by gbuk on Sept 25, 2022 15:35:34 GMT
Okay, I caved in. I'm a patient man sometimes, but once a seed is sewn into the fabric of my mind its inevitable it will eventually have to happen.... Well done that man, very cleverly done! |
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ITBs
Sept 25, 2022 15:58:33 GMT
batou likes this
Post by atlex on Sept 25, 2022 15:58:33 GMT
Top Choice re: Nils.
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Post by swordspork on Sept 26, 2022 7:14:50 GMT
I like the hummelink itbs but the kit is on offer only without the 4age throttle bodies?
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ITBs
Sept 26, 2022 9:30:32 GMT
Post by batou on Sept 26, 2022 9:30:32 GMT
I've been following Nil's for a bit and his does an excellent breakdown of how the kit is put together, heard nothing but good things about people running them too. I looked at the BBR kit as a comparison (which is currently at an excellent price point) but the 1600 version is a bit hampered as their "Innovative intake air vacuum line including idle control valve" is 1800 only unless there is enough demand (will 1800 fanboi's ever stop 😂)...  I understand that makes sense but you are left with is essentially the ATR Itb kit (not a bad thing) and in fairness they are excellent value and priced accordingly. All thats really left to do is just tap their manifold for vacuum etc (i think) so a bit less faff than with the Jenvey kit. For me, if someone has committed a lot of effort to get a kit working for 1600 owners than I'd rather support them, they should also be better suited to offer support if I should need it. The other aspect is the Toyota throttle bodies are a very well tested and reliable solution, well documented manuals and easy to setup, synchronise and service, understandable given their are an OEM solution. I like the hummelink itbs but the kit is on offer only without the 4age throttle bodies? It looks to be a lovely kit and he's done a great job creating a bespoke setup, probably like you I've been trying to source some silvertop ITBs for sometime as I missed his last batch of kits. Been let down/heard nothing from a few places and yahoo (buyee) often cancels/blocks autions (even after review) for them too. Was about to go down the Jessestreeter route (still a great option as I'm sure he'd have no issues finding a good set) but I messaged Nils on instagram to ask when the next batch is due (so I could figure out if its worth me sourcing them seperate) and he offered me a pre-order at a good price due for October so I'd suggest reaching out to him (say @batousan sent you lol). |
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Post by swordspork on Sept 26, 2022 12:18:08 GMT
Done. I did it through the website though. Not hip enough for insta.
If it's possible I'll definitely preorder - I've already got ecu and higher lift cams fitted it's literally crying out for itbs.
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ITBs
Sept 26, 2022 19:55:22 GMT
Post by lowender on Sept 26, 2022 19:55:22 GMT
Thinking about the 1.8 BBR kit minus ecu, wondering if my current MS2 will do the job. It runs on MAP and IAT on my present setup. Any thoughts?
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ITBs
Sept 26, 2022 21:00:12 GMT
Post by Zed. on Sept 26, 2022 21:00:12 GMT
Thinking about the 1.8 BBR kit minus ecu, wondering if my current MS2 will do the job. It runs on MAP and IAT on my present setup. Any thoughts? so no tps sensor connected? Rich. |
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ITBs
Sept 27, 2022 8:20:56 GMT
Zed. likes this
Post by lowender on Sept 27, 2022 8:20:56 GMT
Thinking about the 1.8 BBR kit minus ecu, wondering if my current MS2 will do the job. It runs on MAP and IAT on my present setup. Any thoughts? so no tps sensor connected? Rich. Yes, tps too. |
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ITBs
Sept 27, 2022 9:30:33 GMT
Zed. likes this
Post by batou on Sept 27, 2022 9:30:33 GMT
Thinking about the 1.8 BBR kit minus ecu, wondering if my current MS2 will do the job. It runs on MAP and IAT on my present setup. Any thoughts? i have an ME442 on order, I'll be using the Alpha-N fueling mode so TPS for load and no MAP. Would imagine the MS would have something similar. Looks like the MS2 does have it, this guy is using it on MS1... |
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le sigh