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Mate depending on how far your gonna push the power levels would depend on what route I'd recommend.
Upto 260 bhp a recon 182 box
260-340bhp a recon JC5 128 dci box with the circlip welded in
340+ a R26 box or Scoff VAG conversion
Yeah its taken a lot longer than it should of. It's been at the fabricators since May last year and for one reason or another it was only started last week :( anyway at least during that time I had a chance to change/upgrade a few things.
It will be something quite unique when its done, but all...
Not sure wheres the best place for injectors or what the Omex can drive. I used siemen dekas 630cc (long injectors) last time, bought them of a VW friend. My new 870cc ones are from Injector dynamics in the states.
RStuning sell the short 630cc siemen deka injectors but I'm not sure what sort...
Well if you stick a 255LPH pump in there, its not gonna run lean, mine was happily supplying 374bhps worth of juice via a standard 3bar bosch FPR using 630cc injectors at 75% duration.
As long as your fuel pump can exceed your max injector flow, you will always be able to maintain enough...
The best thing about RTOC is the joining fee as it keeps all the numpties and trolls out LoL
The thing is the majority of highly tuned renault turbo engines have some dealings with the RTOC and the guys there put together some awesome projects. Whilst people on here ask will a 225 lump go in a...
It should cope fine mate, I ran mine at 1.2 without any issues, you'll probably struggle to find an aftermarket fuel rail that will fit easily. I've just had a look on Jenvey's website and theres a couple of renault inlet manifolds, it seems they have a centre line from inlet port to inlet port...
Your plan is fine, obviously you'll need a return. I recommend the PH1 rail with the FPR for ease of use, however theres nothing wrong with using a seperate adjustable FPR.
The map sensor will be fine for the omex it comes with the scaling for programming into the ECU.
there won't be a port for a vac line in the tank so your gonna have to modify your fuel sytem to accept one in the engine bay. Im sure one of the lads over on RTOC used a PH1 fuel rail on his F7R turbo converion, you sure you cant just fit one with the FPR in the rail as it'll save a lot of...
As long as theres some form of boost reference ( a vac line) on your FPR then it should be fine. I just ran a 3 bar FPR and 630cc injectors.
That MAP sensor is the one I use, I bought mine from BurtonPower just to make sure it was a genuine one.
Get a genuine magneti marelli map sensor, it's just not worth the aggro getting a copy.
FPR wise can you not just use a standard setup? the bosch style fitted in the fuel rail on the PH1 172? as it saves a lot of messing around.
Well done Josh+Ktec, 399bhp is a pretty respectable number from a 2871r, how much boost you squeezing through it to hit that? looking at the graph on ktecs blog you can see how much better the spool up is on your lump compared to a low comp (8.5:1) F4R on OE cams. Torque is a lot better as well...
Well, when your wrong, your wrong...... LoL
As soon as soon as I read your reply I realised then Andy simply backed you up. I'll not be losing any sleep over it though :D
Your right Chip + Andy, think I should just stay away from posting whilst intoxicated. :clown:
I wouldn't mind but I've even worked through this scenario when my car was fitted with a smallish turbo so have first hand experience of it and quite good knowledge. Not sure what thought process I...
In theory the dephased state with zero overlap should work great for spool up, then swithching the VVT for a strong top end. How ever I'll just use my catcam vernier pulleys to keep things simple, plus they won't rattle around like a dephaser at 8k+ :)
Exactly, hence why they spool well as there still quite restrictive compared to a stock F4R. The general rule is the milder the cams the better low down torque and response, wilder cams for a better top end. Obviously which ever you choose you sacrifice the other end of the rev range.
Well your the first person I've ever heard claiming that wilder cams with more lift/duration reduce spool and increase response.... Next you'll be telling me they made more torque as well. LoL
I think your confusing response with power, better flowing cams will give more power for a giving boost pressure. But they will also increase the flow efficiency of the engine, therefore increasing the spool/response time.
I think people fail to recognise that people who work in this industry do a lot of it for the love of doing projects like this. :rasp:
The real challenge is getting 500bhp to drive really well on the road, think gear dependant boost settings, boost vs tps maps and the obligatory LSD. Worst...
Your right but looking at the spec of his car it's safe to assume he hasn't went for a fully forged engine with gas flowed head, tubular manifold GT2871R then stuck an eBay intercooler on there.... His intercooler pipework might be small diameter but it won't be smaller than the compressor...
Scotty F4R's flow very well, how many other engines make nearly 350bhp @1 bar of boost? The problem is because of this they tend not to spool up at really low rpm unless you fit a stupidly small turbo which in turn strangles the top end. It's swings and roundabouts but there is a turbo out there...
If your measuring your boost at the inlet manifold (the same place as me) and it's showing 1.4 then your already past the intercooler, pipework and throttle body so there flow capabilities are irrelevant. Your looking for something post manifold causing a restriction.