KTM 990 SD / S60 D5
Looks pretty dam quick.
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172 cup, Impreza P1
And yet all modern hot hatches are turbo'd for fuel economy and emissions.
Have a look on Meganesport.net most failures are the rods bending or fueling problems.
Has anyone added a turbo and made it more economical?
No you're definately right there. It's my toy, my aim is to burn as much petrol as possible when im in it
Here here
Revs kill rods. simple as that. Seen LOADS of meg engines with engine damage on stage 2 upgrades (300+bhp/lb/ft, injectors etc) and it's usually from the same place
Ktec.
Tbf they bring it on themselves.
Right update, i have decided to forge, always the need for more e.t.c will give me a nice winter project to crack on with.
Engine in Brief:
- 8.5:1 CR 83mm Wossner Pistons
- Catcam Conrods + ARP's
- ARP Main Stud kit
- ARP Head Stud kit
- Engine overbored to take oversize pistons, main caps cut / line honed for main stud kit. New oil squirter jets.
- ACL Race bearings
- Minor head skim and pressure test.
- Supertech Nitrided / Inconel valve set
- 630cc Injectors
- Upgrade stock clutch cover to helix cover to make full paddle kit.#
- A larger intercooler (probably a Forge universal jobby)
- Full V-banded 3" turbo back exhaust made from scratch.
- Inconel Turbo fastening hardware.
Battery relocation to boot to create more space fo pipework / larger air filter (probably an enclosed style, piperX Venom or similar).
At the heart is a freshly AET Refurbished Garrett GT2871R Turbo, full fat 56 trim compressor, and .86 Exhaust housing, this turbo is good for ~430bhp, is about the most you are going to stretch from the T25 flange. Will be retaining the log manifold, sidemount possibly in the future... but probably not.
ALthough the log is restrictive its proven to make 375bhp at least, and although the .86 rear housing will make it a bit laggy (the turbo cmae with it i didnt spec it), it will help reduce backpressure and keep EGT's down a notch.
I bought the turbo when bass showed me the advert on piston heads, its currently with him and will be picking it up at shakespeare (thanks again mate).
Anyway while i accumulate parts i thought id start on the first step as it was actually sunny yesterday, the battery relocation. i mocked up the cable run with some old wire and then messaged a bloke on ebay who made me a custom 3.6m long 35mm2 cable for power pre-terminated, saves me messing about.
Drilled a hole in the bulkhead and inserted a rubber grommet.
Ran the cable along the inside behind the plastic kick plate trim, and behind the rear door card and got it to poke out at the boot in the ridght place without stressing it or having it chafe on anything.
Didnt really want to drill the boot floor for an earth, so sanded the ISOfix bar back to bare metal and part of the boot floor.
Done, hooked up the battery and it actually cranked better than the normal place! Just awaiting on a battery box, junction box for engine bay and then ill complete the install.
Nothing interesting yet
Engine in Brief:
- 8.5:1 CR 83mm Wossner Pistons
- Catcam Conrods + ARP's
- ARP Main Stud kit
- ARP Head Stud kit
- Engine overbored to take oversize pistons, main caps cut / line honed for main stud kit. New oil squirter jets.
- ACL Race bearings
- Minor head skim and pressure test.
- Supertech Nitrided / Inconel valve set
- 630cc Injectors
- Upgrade stock clutch cover to helix cover to make full paddle kit.#
- A larger intercooler (probably a Forge universal jobby)
- Full V-banded 3" turbo back exhaust made from scratch.
- Inconel Turbo fastening hardware.
Battery relocation to boot to create more space fo pipework / larger air filter (probably an enclosed style, piperX Venom or similar).
At the heart is a freshly AET Refurbished Garrett GT2871R Turbo, full fat 56 trim compressor, and .86 Exhaust housing, this turbo is good for ~430bhp, is about the most you are going to stretch from the T25 flange. Will be retaining the log manifold, sidemount possibly in the future... but probably not.
ALthough the log is restrictive its proven to make 375bhp at least, and although the .86 rear housing will make it a bit laggy (the turbo cmae with it i didnt spec it), it will help reduce backpressure and keep EGT's down a notch.
I bought the turbo when bass showed me the advert on piston heads, its currently with him and will be picking it up at shakespeare (thanks again mate).
Anyway while i accumulate parts i thought id start on the first step as it was actually sunny yesterday, the battery relocation. i mocked up the cable run with some old wire and then messaged a bloke on ebay who made me a custom 3.6m long 35mm2 cable for power pre-terminated, saves me messing about.
Drilled a hole in the bulkhead and inserted a rubber grommet.
Ran the cable along the inside behind the plastic kick plate trim, and behind the rear door card and got it to poke out at the boot in the ridght place without stressing it or having it chafe on anything.
Didnt really want to drill the boot floor for an earth, so sanded the ISOfix bar back to bare metal and part of the boot floor.
Done, hooked up the battery and it actually cranked better than the normal place! Just awaiting on a battery box, junction box for engine bay and then ill complete the install.
Nothing interesting yet
KTM 990 SD / S60 D5
Looks like you are going to be in wheel spin heaven lol, spec sounds good, you going to fit a diff.
We had good results with the eBay intercooler's on the 20vt engines. The 300x600x76 intercooler for £89 was actually outflowing the forge race item!
Laine, the catcam rods come with catcam con rod bolts, they're a different thread to ARP's so cross them off your list. Regarding Turbo's I ran a GT2871R on a .86 turbine housing, There is no way it will do 400+bhp on a log manifold your EGT's will be through the roof.
Ah didnt realise they were different, all i know is they come with them (i wasnt going to buy seperately). I believe you had the compact GT28R cover which only supports the 52 trim compressor wheel, so i may have slightly more headroom there, HOWEVER 400bhp isnt really a goal im heading for, more of a 'it makes what it makes'
Looks a good spec mate, will be epic once it's good.
Looks brilliant mate!
What sort of power are you going for?
What sort of power are you going for?
Ah didnt realise they were different, all i know is they come with them (i wasnt going to buy seperately). I believe you had the compact GT28R cover which only supports the 52 trim compressor wheel, so i may have slightly more headroom there, HOWEVER 400bhp isnt really a goal im heading for, more of a 'it makes what it makes'
It's not the comp cover that was the issue it was the log manifold, T25 flange and small turbine wheel.
Hmmm well i have always fancied fabricating my own manifold...
The T25 flange restriction i can understand.
But the "restrictive" turbine, is the same one used in the GTX2867 turbo, and according to garretts website that is capable of 480bhp? If only the compressor has been improved / redesigned on that turbo, surely it shows the compressor as the restriction?
It will be the manifold holding it back not the turbo.
And worse still it wont hold back by just stopping power get higher than a particular value, it will hold back by putting EGTs through the roof on one particular cylinder and just melting it without you knowing what is going on unless you have 4 EGT probes!
And worse still it wont hold back by just stopping power get higher than a particular value, it will hold back by putting EGTs through the roof on one particular cylinder and just melting it without you knowing what is going on unless you have 4 EGT probes!
They are talking about a highly optimised engine though mate, a bit like is perfectly possible with zero boost to make 300bhp from an F4R on bodies, but none of us normally get to see those either, lol.
Personally I am not a fan of the whole 28 series though, I much prefer the 30s and a GTX3071 will easily do 550bhp genuinely without being too laggy on a 2.0 engine IMHO, so if I ever bother to go for a bit more power with mine and hence need a custom manifold etc, I'd probably go that way.
I think the normal gt3071r turbo is massively overlooked, ktec recently achieved 474bhp at the wheels with one on there clio, and best of all it easily outspooled a gt28rs and was running pretty low boost with a reasonable 1.6 bar.
With figures like that I'm not sure why Garrett bothered with a gtx version. LoL
With figures like that I'm not sure why Garrett bothered with a gtx version. LoL
474@wheels from a GT3071? AKA 550@fly?
Seems a bit optimistic, maybe was a dyno reading issue.
Good turbos though, of more interest to most folk is how they will do 400bhp easily and spool nicely, ideal for a very quick trackday clio IMHO,and if you want to go drag racing then use some nitrous.
Seems like turbo clios are the new flavour of the month!
And a good few of us will be running 300bhp + by the looks of things
And a good few of us will be running 300bhp + by the looks of things
It does seem like everybody's feeling the love for boosted f4r's lately lol
Do you mean Conrods Big End bearings or Main bearings as well? I look around, and I can not found proper ACL Main Bearings for F4R engine (i.e. without pin lock)
Do you mean Conrods Big End bearings or Main bearings as well? I look around, and I can not found proper ACL Main Bearings for F4R engine (i.e. without pin lock)
If you want a good option for the bearings, have you looked into getting tagged ones done to try and discourage the centre main spinning which the F4R does like to do?
Can you recommend a good brand of tagged bearings for the F4R, Chip? My rods have the holes for tagged bearings, but the bearings I purchased (before hand) do not.
