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JP4 ITB's High Comp Saxo VTS ( Engine in and Running Mapping next )
Engine Spec
Block TU5JP4 Wossner 12.2:1 Pec Forged Rods LAD Balanced/Knife-edged/Lightend Crank Head Ported JP4 Head Newman PH3's JP4 spec J4 Valve Springs VTS Cam Pulleys Induction KMS DTH Taper Bodies 90mm Trumpets Fuel System Stock Intank Pump 1L Swirl Pot Bosch 044 Custom Loom for pump Fuel Lab Filter AEM Adjustable Fuel Pressure Reg Pico 330's AN6 Stealth Black PTFE Lines Stealth Black Fittings Interior Stripped barring roof liner and carpet Seats Sparco Evo 3 for me Sparco Evo 2 for the passenger Electronics DTA S40Pro ECU Sandy Brown Engine Loom Race-Technology Dash 2 Fuel Pressure Oil Pressure EGT Sensor all other readings via Can-Bus from Ecu Drivetrain VTR Box Quaife LSD AP-Racing 7.25 4 Puk Clutch AP Racing 50mm HD Release Bearing Spoox Custom bearing carrier Braced Clutch Lever Suspension Bilstein Group N fronts Skip Brown 220lb Springs 40mm Bilstein Group N Rears Wheels TD Pro 1.2's Prada Spec 2 Brakes 406 Brembo Caliper Feredo DS2500 Pads 285mm Grooved and drilled Disks Fog Light Air Ducts |
I have to say something I'm afraid, I wouldn't risk that crank in an engine. It may have overall end to end balance, but the internal balance and counter-weighting are going to be way off, so the odds on failure are high.
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what makes you say that sandy? are you seeing something im not?
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I would of just got the standard crack, balance, and polished, checked for ovality. These cranks are very good standard cranks. But Looks like it going to be a good biuld! Good luck with it. :)
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Few trusted engine builder out my way have warned me about lighten ect of these cranks. Not 100% sure on the in's and out's but was told not to do it.
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I've spent a long time working on VAG motors in the past, especially the 1.8t and 12v vr6, and never had issues with working on stock cranks
looking around at a few french builders, some do it and some don't seems to be a french thing lol |
I know people do it. But I took my crank to these people who looked at it and said to leave these cranks alone. Well bar from balance the crank with everything else I.e. blue printing. But not to knife edge it ect. Could be different with other cranks. But I showed him mine and they just said to balance and polish it ect.
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What sort or RPM are you looking for? i would use a lightened OEM crank either. Shell looks pretty awsome like and the rest of the spec sounds noice!
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RPM isnt the goal, on the cams im using 7500 rpm is as far as theyll make anything.
accelleration is key, getting the rpm to lift freely is key reducing rotating mass and static drag through oil.... Im not after making high power, just power that is smooth, fully usable and the right amount for a balanced track car and daily runner ( when needed ) |
Id go for a billet then or just stick with pulling it out of the flywheel/clutch.
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Dont forget the huge savings in the pullies too - over 1kg.
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Mine rev's up more than quick enough with the standard crank ;)
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Right nice mate
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Exhaust Update
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Update
Been looking into manifolds for the car and have decided on this one Maniflow Competition with additional flex joint and 200cel hiflow cat added. Not cheap but worth it Spent about 30mins on the phone with them, really good to chat to. |
sounds like it will be a pretty awesome build
can you PM me some info on the maniflow manifold please |
Get Mike Edwards to make you a custom jobbie up, cheaper than maniflow, longer primaries and better quality too :D
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who's mike edwards?
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wait im guessing edwardsmotorsport.com ?
just contacted with requirements |
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Picked up Crank today looks really nicely done and feels a lot lighter, has been knife edged, flattened and balanced
then due to comments, spent hours looking into Frenchies and KE,L,B Cranks End result... Its staying, I have found quite a few builds where they have been used, no one with any issues. This one in particular seems to be very nice.. The only questions against are the end balance and how it effects harmonics at static rpms To combat this I would suspect the use of either a fluid or stock harmonic damper would be best over moving to alloy pulleys, helping to maintain harmonic balance while still freeing up rotating mass... Opinions? To be sure I am going to get it to a machine shop and get it re-balanced with full clutch, pulley, and rods/pistons |
Niiiiiiiiice!! Really nice. Absolute best colour! Without a doubt. Slightly gelous
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I also have his direct contact number if you want it |
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Got a shed full of parts, and a wife that is seriously pissed at me for spending too much.... game over
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 Somethings are now back on track.... Little bit of lovin |
Well the other day was pistons n rods together...
Today spent a couple of hours on the block, crank in, pistons n rods in...  then spent another couple of hours on the Dash Loom taking the pugs from the Dash 2 and mating them up to a 24 pin M/F plug making it easier to fit  after that had tea and watched Doctor Who :) |
RaceTech Dash 2 Installed, just a couple or wiring bits and some programming to do for sensors Awaiting my loom back from SB so I can swap over to the DTA ecu then its new engine in, new ITB setup, new gearbox, new clutch, new fuel system... Hoping to have it all finished this week |
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New fuel System plumbed in no more smell with all ptfe lines
Still all need bolting down into place 1L pot, Bosch 044, fuel lab filter -6 lines More to come tomorrow when the new ECU is finished, and all the new sensors for the dash are finished being wired up |
Engine and Interior Updates
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Not the nicest day for the weather but got lots done today
Interior Fit additional Sparco Evo 2 for the wife ( she has a big butt too :) ) Finished Fuel Swirl pot install inc a bespoke wiring loom for the 044 Finished Dash 2 and gauges install Engine Fitted Head with ARP 10mm 200,000lb Studs Fitted New C2 Spec PH3's Fitted Piper Pulleys Test fit of New Maniflow Exhaust Manifold ( still needs wrapping and Lambda/EGT bungs fitted ) Finished install of New DTA S40Pro with Sandy Brown Loom and Crossover All in all a very productive day.... in the rain |
Bit of an update
Ive been fannying back and forth for some time on whether or not to sell up or keep going money ran tight after being out of work for too long, so now im back at the grind stone again i feel im at a better place for this to actually finish So tonight after having my last fling with a Clio Cup 1?2 on the way home.... I do really love whooping on kids I decided its time to put the car up on stands and start the stripping...... Nope, not to sell up, but to finally finish of this engine and get it in so over the next couple of days the old faithful stock bottom with the lad head n cam will come out and in will go the new engine, clutch and box ive been building, parting out, selling over the last couple of months... Going to strip everything back and give it a good clean and a lick of paint change some of the wiring re do a couple of bits and bats that need some maintenance and all being well start it up some time early next week to start mapping, well give or take a few days when the wife finally pops the young one out 9 days late n counting.... |
Very nice engine work!!!
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Kinda has to stop doing stuff on Monday due to my new Baby being born on Tuesday, so now I'm a proud father of a gorgeous baby girl
Anyway back to business Engine bay ready to drop current engine out..... |
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Part 2
New Engine fully ready to drop in New axles ordered Just need a hoist to get it done All being well engine will be ready to fire up and run in from Tuesday Then start mapping on Friday |
Very nice build, love the engine too.
And congratulations on the new born. |
Congratulations on your newborn daughter !
I am suprised you do all this work on your own , no help from anyone not even a friend for some muscle power?? Keep it up thought!!! |
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Out with the old
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In with the new
Oh and thanks for the congrats on the new baby Anyway just need shafts and filter to arrive Monday and we are in business |
Nicee progress!
Congrats on the baby. |
are you still going to be using that fancy manifold?
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Bit more done exhaust now complete
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