Vovchandr

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Depending on your budget there will be a great one listed from FL on BaT later this month.

Im in

Bump for reminder and visibility to new members

What Hides in a Halfords Car Park? CHASER SENDS IT!

Interesting. TWM (Borla) lists only one set on their website for ITB's. My build also uses a Pectel. I do not have Unisyn but I have the other meter. Not sure on accuracy or application differences but it gives me a ballpark when I was testing things https://www.amazon.com/dp/B00CMC57R0/ref=cm_sw_em_r_mt_dp_46RPF4HEHTBZR2V97TXZ?_encoding=UTF8&psc=1 I'm not going to fix at at this moment while it's not broken but thanks for the feedback. I wasn't sure how some people ran without these vacuum ports being drilled or with them sealed. Your setup helped answer that question. Seems like your setup is better due to having less parts involved. I'm not sure if my model even has an option to keep each butterfly partially open at idle but there might have been an adjustment screw on the back of one that controlled all at the same time. Have you ever dyno'ed your setup? The parts list that I got for "$100 rebuild" so far has ran about 10x that and I'm getting practically a brand new unit in return (actually had to get a new body among along with everything in it), but I'm expecting the car to behave quite different and hopefully for the better once the unit is back. In a less than ideal world, it won't run right after the return and I'll have a lot more troubleshooting and tuning to do with the rebuilt setup.

Wiscombe Park Hillclimb 28 April 2019 - Caterham 7 HPC - R600kg

Zenos E10 R vs. Radical SR1 vs. Caterham 620R vs. Ariel Atom - The FULL Challenge | Fifth Gear

Caterham 420R vs Ariel Atom 3.5

I dont have an explanation for this one J P Belmondo White Caterham Lotus7

Thanks. Trying to understand. So you don't have an IAC valve and your butterflies stay partially open to take air at idle? You also have TWM's?

Double post instead of edit. *delete*

All straight cut dog box sequential. Old design Quaife Sierra. I drive 98% of the time on the street and when I come to a stop I rarely put it into neutral, just keep it in first. So far the maintenance was taking it apart when the clutch failed and inspecting/resealing replacing gaskets etc after 20 years. Looked pretty healthy. Gear whine is very addictive.

Straight to the IAC. Looks like IAC fed the air to the runners past the butterflies when those closed. Which poses question as to how the cars above run with these capped if they don't use the IAC like the green one from BaT

Wow. That did not look like it would fit!

Here are mine So the question is, what purpose do they serve if they aren't necessary? Should I not have them machined and just run it as is? I assumed that it allows for IAC to work. So how do they ones with the capped work? Do the butterflies have a small gap and never close all the way?

Borla (formerly TWM's) have my ITB's for a rebuild. Besides all the other things that are wrong they mentioned to my surprise that there is an issue with "my" vacuum ports and asked me if I'd like their machine shop to try to replicate them on the new housing. This was surprising because I'm fairly certain these were OEM from the dealer, which caused me to look into it a bit deeper. I've found some 7's that have them cut like mine and capped and others that use them. Here is one on BaT that had them capped Here is another that has them connected These are also capped