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Planned Modifications....

Tim

New Member
Ok, been discussing with my mates at http://www.eastcoastcustomsonline.co.uk to come up with a strategic engine tuning plan for the Vee.

They generaly concentrate on 9/10 second quarter mile subarus, and evos so this is new although the partner has a wealth of experience with fast Renaults!

He has advised that spending a load of money early on in a project when one is really hunting for 400-500bhp eventually, i.e, on exhaust manifolds and a custom inlet would be pointless as it would be lost, depending on the future chosen route i.e, Turbo/Supercharger.

Building a set of manifolds would cost roughly the same
amount of money regardless whether they have a turbo flange or not, but a set for N/A use would be impossible to alter for this application at a later date.

Soooooo (deep breath), he decided that in his opinion this would be the sensible route to reliable power if the original engine was removed and the following done:

1. Balance and harden the original crank.
2. Inspect the rods and decide on their viability. (if not have a set made)
3. JE forged pistons made to spec.
4. Port and flow the heads (look at cam profile)
5. Build exhaust manifolds to suit turbo application (bhp to decided by me the owner)
6. Look at inlet and determine its flow capacity (in a turbo application items that are restrictive for N/A use are no longer a problem due to manifold pressure being positive rather than negative.
7. Determine if we can use a intercooler or chargecooler and fabricate accordingly.
8. Management, the original ecu will be incapable of coping with this level of modification and a stand alone unit will be required (Motec, Autronic etc) this opens up further options (launch control, antilag, traction control)


He has also advised that, if I decide to go ahead, it would require a lot of commitment (due to down time and the level of work required)....

The reality check is: Is the Vee worth it to do this level of modification with or is it best to leave alone give to the wife who will no doubt eventually wreck it, and buy myself an EVO 7 FQ400 or even a stock EVO 7/8 260 and have it tuned to 400+BHP initially.......it certainly would be easier to tune an EVO but less of a challenge, and less rare than a "500BHP twin turbo flame spitting monster" of a Vee.

Either way I'm besoted on EVOs as of this present moment and I feel a change coming next summer!

I await your comments as always!
 
Driving a high HP turbo 4wd is a different experience altogether - that is gonna be your main dillema IMHO.

A 4wd car is so easy to drive and control on boost power sliding, handling, drifting, extreme acceleration and if you go for an AYC EVO or Scooby they are practically uncrashable. You would be able to make good use of the power without it being wasted.

A skyline might be another bet as these can be tuned mentally and they are regarded as the best drift cars and also very light in their early R32/R33 V specs.

I am guessing but 400-500 hp in the Vee would probably be very scary but at the same time a lot of fun. Transmission is bound to be a weak link though with an open diff (which would surely need to be changed LSD I would guess) you will just light up tyres.

I don't think in a Vee the power would be useable unlike a 4wd turbo car.

A lot will boil down to money and the acheivement factor of the build. Everyone tunes Evos and Scoobs and Skylines. You just chuck some money at them and its a question of 'how much power' or 'how fast' do you want.

Martin
 
er - done all this - you forgot the transmission.

£11k fitted plus clutch and flywheel.
Driveshafts etc etc about another £1k

Best blower, Procharger C2 - I have all the patterns for brackets and 12 rib pulleys.

Best Turbo's GT25R - 500bhp/480lb/ft at 1.2 bar - flat curve from 3000rpm on Motec management - standard ECU in the bin.

Cams are to strong for turbos - new high lift short duration required.

Compression 8.3 gives best balance of driveability/economy and 500bhp at 1.2bar
 
This'll keep tem happy and you poor!!!!

17.  GT25R Garrett turbo 60 trim roller bearing turbos
1.      4360 forged steel X beam rod set
9.      Forged low compression slipper piston set
12.  Pneumonic material inlet valves
15.  AMSR440-R spec cams From Blanks
8.      WRC steel multi layer head gaskets
13.  Pneumonic material exhaust valves
21.  Air injector boost control valves
23.  Solid lifter set and shims
14.  Eibach single valve springs
22.  Sump pan extension and new oil pick up pipe
4.      ARP 2000 head stud kit
18.  Garrett dash 31 actuators
24.  Braided steel turbo oil supply twin pipes
5.      Spatter big end bearing set
3.      ARP 2000 mains stud kit
6.      Lead indium main bearing set
16.  Nippon Denso platinum spark plugs
7.      Lead indium thrust washer set
19.  Bosch C102 injectors Side feed type
20.  Magnetti Merelli 4.5Bar fuel regulator
2.      ARP2000 big end bolts
10.  Race spec Tapered wrist pins
11.  Race spec flat coiled circlips
25. Turbo manifolds/Exhaust/pipe to intercooler
26. Tial wastegates x 2

Service parts

1.      Cam belt Gates competition type
2.      10/60w Fully synthetic engine oil
3.      High flow oil filter

Engineering
1. Supply and fit Ilmore liner set
2. Bore liner set to 86mm
3. Torque plate hone block
4. Bore cylinder block head bolt locations and install head stud kit
5. Install Block mains stud kit
6. Bore mains saddles to provide oil spray jet location
7. Radius grind crank and micro polish
8. Mill supply canals into mains and big end bearings
9. Machine block face to restore crank to head centre line
10. Replace valve guides with WRC items
11. Replace inlet valves & cut 7 angle valve sets and blend to 3
12. Replace exhaust valves & cut 7 angle valve sets and blend to 3
13. Install new valve springs and set heights
14. Install new cam set
15. Shim solid lifters to correct clearance
16. Create two turbo oil drains in engine block
17. Weld in baffle plates in to sump casing

Labour works

O ringing of mains case to engine block
O ringing of inlet manifold
Aluminum extended sump fully baffled
Custom adjustable cam pulleys
Boring of oil ways to suit application
Dual feed set up of crank oil feed. Each end.
Sump air bleed to rocker cover
Twin cylinder head oil drains to sump
 
That's all very nice but I'm thinking about a diesel transplant.

Seeing as it's just won Le Mans it's gotta be the way forward......


In all seriousness Tim, that sort of work (done properly) is going to cost more than the car did as new, as Mike says, you have to do the transmission too and more besides. It's not really viable unless your surname is Taylor.
 
who said it was viable - my middle name is stupid!!!!!!!!

Now diesel turbo mmmmmmmmmmm

even more torque - just calling JCB
 
My lad's got an old engine out of a JCB3C that has become 'attractive', seems it will need a bit of TLC to get 3000hp though.
 
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