
Komdotkom
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Everything posted by Komdotkom
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
It's got a fully optioned M600 at the moment but I've just ordered an M150 and dev license for it. One of the reasons for going to M150 is more inputs, I'm out of space and that's with the dash upgraded for extra I/O. I could probably drop a few of the less critical inputs off and only connect them for testing but the added flexibility of the development license for M150 is certainly worth a few extra dollars. My I/O list is similar to yours but I don't run N02, it's a rally car.- 154 replies
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
Yes, it's got most of the Motec catalogue in it so runs just about everything you can think of. Just missing tyre temp sensors and suspension position sensors I think. At the moment it runs 'traditional' Motec traction control strategy but I was considering a DBW TB in the intake pipe after the IC to bleed off boost as a form of TC which was very effective because it doesn't impact engine speed an efficiency as much as other strategies. A mate ran his IPRA car like this with excellent results.- 154 replies
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
It's a race car and has Motec everything so DBW is used for idle control and I'm a big believer 'in if it's worth doing, it's worth over doing' I wanted a forward facing TB and would have had to purchase a larger unit anyway so there was essentially no significant cost difference between DBW and a cable throttle.- 154 replies
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
Mines just a single TB on a Plazmaman intake, not the ITB setup so it's nothing fancy. This is from last year.- 154 replies
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
I must win the over capitalisation contest then, my RB20 is DBW!- 154 replies
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RB20 Turbo selection (twinscroll housing advice)
Komdotkom replied to iruvyouskyrine's topic in Engines & Forced Induction
Sounds like you are challenging me for the most overcapitalised RB20 in history.- 154 replies
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Borg Warner EFR Series Turbo's V 2.0
Komdotkom replied to Piggaz's topic in Engines & Forced Induction
Yeah, that Spry bloke hasn't got a clue. -
https://page.auctions.yahoo.co.jp/jp/auction/c773806258
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Ross RB Power Steering Pump Relocation Bracket
Komdotkom replied to GeeDog's topic in Engines & Forced Induction
As others have said it's not that simple. I didn't bother trying a timer (for pump start up) then SSD voltage control vs wheel speed because that car didn't have an ECU that could easily be made to do that (Autronic SM4). I would still use a powered column if I was to do it again since they are simpler to configure the amount of assistance provided. -
Hmm, not on the GCG website and Ebay is showing they are out of stock. I wonder when they'll actually be available. Price seems to be about the same as an 8374
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Ross RB Power Steering Pump Relocation Bracket
Komdotkom replied to GeeDog's topic in Engines & Forced Induction
Not that simple with the Astra stuff unless you know the CAN protocol. If I was to do it again I'd do a powered column instead of an electric pump. -
Ross RB Power Steering Pump Relocation Bracket
Komdotkom replied to GeeDog's topic in Engines & Forced Induction
Following with interest, while I agree it's a pretty expensive bit of kit for what they provide but when you consider that you could ruin a race weekend with a damaged belt or bin the car due to power steering failure it doesn't seem so bad. FWIW I have put Astra electric power steer on a car and would never do it again without being able to adjust line pressure vs wheel speed, it was like driving a 70's Valiant with power steering with zero feel/feedback. -
My tarmac rally car had one of these in it! I couldn't find anyone with a computer that ran on steam to tune it, so the logical solution was to spend $15k on Motec shit. I'm pretty sure it's still in the shed if I can find it you are welcome to it, has a tune for RB20 with highflow and made about 7kw at the wheels, good for 1:45 at Sandown.
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Borg Warner EFR Series Turbo's V 2.0
Komdotkom replied to Piggaz's topic in Engines & Forced Induction
That must be a handful, 200kw to 400kw in 500rpm. Thanks for taking the time to post something interesting and some real world results. -
I need a core to send in for highflowing, anyone have a dead OP6? Or even just the front cover?
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R34: JRZ installed = chatter noise
Komdotkom replied to Hella_GTR's topic in Suspension, braking, tyres and drivetrain
I've got a mate with a JRZ package on his IPRA car, and another mate has them in his 996 Turbo, they don't and shouldn't make this noise. I would 100% be making a warranty claim on these because that's not a 'normal' noise for a set of $1000 BC's let alone a high end manufacturer like JRZ. To me it doesn't sound like an internal damper noise, I'd be looking at all of the mounting points and investigating areas for free play and movement to occur. Another good street/track option that's got decent support in Japan is the lower spec Ohlins Road&Track. https://www.ohlins.eu/en/products/automotive/nissan-skyline-gt-r-1993--29/ Or just get a set of MCA's, I've got the gold series on my car (3 way) and they fantastic. There's no local support for them but you can just ship them back to Murray in Australia and he'll do whatever you want and then ship them back to you. -
vic WTB RB25DE complete engine (Non turbo R32 skyline)
Komdotkom replied to DattoP510's topic in Wanted to Buy
Good luck mate, I searched for ages before I found one. -
R32 Gtr Tein superstreet Spring rates
Komdotkom replied to SiR_RB's topic in Suspension, braking, tyres and drivetrain
At the risk of sounding like a smart ass, there's a lot more to it than 'mono tube are better' For example, arguably the best dampers in the world the Ohlins TTX 40 are twin tube (that's what the TT stands for) https://www.ohlins.com/product/ttx40-mk-ii/ Having said that, they are a well researched and engineered solution from a company that expends a huge amount of time resources on a product that works. I think generally speaking for less well resourced/mass market companies a montube is simpler to execute to a higher standard and provides increased flexibility when pushing out designs across a number of platforms. -
I've just started using RevZone and have been pretty happy with the work. I like to understand exactly what happened on the dyno and review the logs, issues and solutions with the tuner which Justin and his team are happy to do. My car has a fair bit of Motec gear in it and a pretty custom setup, so it took some mucking around to get it right. When I got the car back, the cold start wasn't awesome (not terrible either, just some hunting around 20c) so I sent Justin a quick email to see if they could give me some pointers as to the cause because there's a few comp tables running concurrently at that time in my setup. Rather than just give me the answer or tell me to bring it back, he offered to send his tuner to my house to fix the problem free of charge. Pretty good service I reckon. I've had cars tuned at many other shops in the past and have been less than impressed. Good power tunes but shit attention to detail and poor drive-ability.
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RB25 build Piston dome volume
Komdotkom replied to zac the muss's topic in Engines & Forced Induction
This is surely a troll of epic proportions. Is it school holidays again? -
This is tops, love your work.
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Rb25 Coolant Flow / Hose / Swirl Pot / Header Tank Setup
Komdotkom replied to kitto's topic in Engines & Forced Induction
I made it myself. -
Spline Drive - Opnions, facts, any failures??
Komdotkom replied to mitchum's topic in Engines & Forced Induction
I didn't get the car back on Friday as expected, they are going to finish the dash config on Monday so I should have it back on Wednesday. I'm going to have a chat with my local Motec boffin about some strategies to get it working more effectively. I can run a couple of comp tables to compare EMAP/IMAP/Turbine speed and EGT, I think I'll have to pull out a fair whack of timing at higher RPM as the EMAP gets out of control. The engine has fairly high dynamic comp to work with E85 and doesn't take much timing on 98. I'm limited by the class of racing that I'm doing to using 'standard' housings. Obviously you can highflow but the 21u housing is choking the shit out of things and has zero ability to regulate boost so I've got some fairly radical plans for the turbine housing. Car made good power on 98. It's an RB20 (Roy would love it). With the dial indicators, my engine builder setup two at 90 degrees to each other and measured the movement in the pump housing from the centreline then very slowly did up the bolts while keeping the pump housing centred using a nylon hammer and some love taps.- 52 replies
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6 Speed gearset for R32 & R33 gearbox
Komdotkom replied to Torque Curve's topic in Suspension, braking, tyres and drivetrain
If you don't want 4WD just use a 370Z box and an adaptor from Collins.