johns tvr rebuild part two
Discussion
well here i go again after finishing nicks chim and having much fun with it track days at brands bedford runs at the pod etc. we are very confident with the car but now i am going to the next level, i am going to up the power output of the engine which entails upping the blower to about 10psi from the 6psi we are currently running, fit larger injectors to handle the extra fuel that is going to be required i am going for the bosch green giants with a rising rate fuel reg, i am increasing the size of the expansion tank as it is a bit marginal on fluid capacity also going to fit a breather to the other rocker cover to ensure that we dont get to much crankcase pressure as it is bound to rise with the extra boost, obviously some more work to do with the emerald to accommodate all these changes so some fun times ahead. the other major upgrade is the brakes and suspension we are using nitron coil overs with 400lbs on the rear and 450lbs on the front which i grant you is stiff but with the damping turned down should be reasonable on the road but will stop the roll and moreover the squat that around 400hp will generate to be honest 375bhp would be great but the theory at least looks slightly above that, so to the brakes i am working with alex at hispec and am taking the wheels down to dartford tomorrow so he can 3d image them to get the biggest rotors in the wheel looks like we might manage 300mm on the front with a slightly larger rotor on the rear they will be fully floating race spec discs on ally bells with sixpot calipers up front and two pot with handbrake facility rears both ventilated and race grooved with suitable pad material yet to be finalised, got a few pics of the strip down been running round everything just to check on tightness etc. only slight niggle was the diff carrier but have sorted that this afternoon, the other upgrade is to the dash the rev counter and speedo are going in favour of a dash pro 2 which i am sure will not sit well with the purists but i feel it is the way forward far to many issues with the old gauges.
john
Moderator edit: please use the classifieds for advertising parts for sale.
john
Moderator edit: please use the classifieds for advertising parts for sale.
Edited by jeremyc on Thursday 22 August 10:32
busy day today visited hispec in dartford i am very impressed with there set up and quality, i to have read the negative comments which seem mainly to have been 10 years ago they have always returned my calls which is less than i can say for wms he dosent even have a running web site with his phone number which dosent meen he dosent make a good product, but i wanted bespoke brakes not off the shelf they are manufacturing me 300mm rotors with the rx 6pot caliper fully floated with there latest less noisy fixings which are all machined from stainless with 32mm race spec outers basically all that means is the grooves dont go to edge of the disc so as not to induce cracking time will tell but i am more than happy rears are 25mm also 300mm with two pot plus handbrake callipers. just a few pics the callipers in the pics are the standard six pot not the rx version i am using which is a lot heavier build so no flexing.
john
john
Edited by Engineer1949 on Thursday 22 August 21:30
dash first i work with a local company who do many consoles and dashes for me mostly marine called brian ward electrical they are basically marine trade but you can go through me should you wish.
handbrake they are building me a set of two pot rears to fit my existing fixing points with a handbrake lever that will work on the main pads will have to fabricate a retainer for the cable outer in the right plane but the actual cable itself will fit there lever.
john
handbrake they are building me a set of two pot rears to fit my existing fixing points with a handbrake lever that will work on the main pads will have to fabricate a retainer for the cable outer in the right plane but the actual cable itself will fit there lever.
john
Must say they look ok but as they dont go behind fifteen inch wheels and b more importantly without sounding picky they are a bodge spacers and auxiliary brackets to get them to fit just not on for me our system is made specifically to attach to the existing fixings with no spacer or auxilliary brackets far to many things to fail plus the graded size six pot gives very even pad wear and pressure under severe braking.
John
John
got a couple of bits done today fitted the extra capacity lower tank to the expansion tank,and modified the throttle linkage, with the sc blower the plenum goes on round the other way so the throttle cable has to go through 360 degrees to operate the butterfly leaving a woolly feel to the pedal, so i have modified the linkage it now will have a solid link from where the cable used to attach to a machined quadrant which then has the cable direct to it from the inner wing, shortens the cable to so should be much improved ,also turned up a couple of top hat washers in stainless to fit into the existing speed sensor bracket which in turn accepts the racetech speed sensor for the new dash.
john
john
another day some more work, got the pulley of the blower and fitted the 80mm diameter one should now produce around 10psi also got the new green giant injectors fitted plus all the sundries vac pipes pressure pipes coils packs blower oil reservoir etc., managed to source the new length belt for the blower amazingly its only 14mm longer so getting there ,should have the new dash blank on friday so can get started on the dash2 pro install should be fun not least of all working out the number of pulses per mile from the speed sensor,
john
john
I will get some good shots of the finished article i am waiting for the clevis linkage ends to arrive once done will post pics and yes i could easily make another if you supplied your original
The temp sensor has never been a problem it is as you suggest in a heat protecting medium plus the plenum is insulated from the manifold hot starts ert. never been a problem.
John
The temp sensor has never been a problem it is as you suggest in a heat protecting medium plus the plenum is insulated from the manifold hot starts ert. never been a problem.
John
yes work seems to get in the way want to get the wedge painted before the bad weather, been finishing the reversing throttle linkage so as the back to front plenum dosent have to have a cable going right round in a circle taken a bit of working out always seems simple at first glance anyway heres some pics see what you think.
john
john
Yes it can daz but not all at once we will have boost pressure egr readings and some other configured parameter like g force lap times acceleration so we kept the standard small clocks plus i feel it would look odd with none at all should look good at night all can be blue back lit.
John
John
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