Bit of an update from my last post:
When I bought the car I was always a little unhappy with the performance.
A good test for me on a cars performance is to take it on the strip.
A trip to Shakespeare showed this to be true with a 14.9 at 94mph.
The following week I had the car at the dyno where she made 209 Flywheel Bhp at Powerstation Dyno confirming my suspicions. Now the car has always driven smoothly and has never bogged down no misfires or the like and the power/torque curves were relatively smooth on the graph, making me a little dubious of original quoted figures, as this was a fair bit off the mark from this builds potential with no issues arising from the engine/driveability to suggest mechanical or electrical gremlins.
So I booked the car in for a bit of investigative work at Performance Autoworks and to get the car remapped on Shell Vpower instead of the current 95 ron, as I thought this may be a contributing factor to lack of performance, and to fit an ATR Inlet manifold getting it port matched to the Skunk2 68mm Throttlebody at the same time.
After dropping the car off and telling Rich to crack-on, he undertook a leak-down test that showed very healthy results, so no problems there. A quick phone call later and he told me that the cam gears appeared to not be dialled in as they were both set at 0 degrees. The car had had some minor head work, so thought that these possibly could have been dialled in, but gave Rich the go-ahead to dial them in. Main plan was to use Skunk 2 recommended setting then go from there.
Shortly after this call I had a concerned Richie on the phone again asking me to pop by on my way home from work.................... (This didn’t sound good).
Arriving at Richies he showed me the car on the ramps and the problems that needed addressing.
-The DTA is meant to be standalone had been piggy packed onto the existing ECU(For reasons unknown) and the wiring looked like a small rats nest with lots of spade connectors.
-Crank Pulley not up to tension as it came far too easily, this in turn had caused a few problems and could have been caused by the toothed trigger sensor wheel that had been welded on to the pulley and appeared to have not been balanced on crank pulley due to lack of evidence of balancing marks. The combination of these two items and someone widening the key way on the pulley had caused the splines on the crank pulley to wear , making it move 5-10dgrees rotationally on crank, also tilting back and forth 5-10mm causing it to hit and damage the ECU trigger sensor and damaging and causing excessive wear on the crank. So the car needed to have another crank and crank pulley fitted.
-Next the Front balancer shaft had worn excessively, rotating approx 5-10 degrees again and the retaining bolt behind the cover was not attached that was later found attached to my magnetic sump plug. This meant the shaft travelled approx 10mm laterally along the shaft. The retaining bolt is not under load and could only have come loose due to not being torque up. I was lucky on this one that the belt handy jumped and completely fooked the whole engine.......So thanks Rich for your Eagle eyes!!!!
Another Crank and crank pulley was sourced and fitted along with a Balancer shaft removal kit from the states as the existing front balance shaft was too badly worn.
I wasn’t happy with fitting another toothed wheel to the end of the crank pulley as it weighs a ton and had caused problems previously (more to do with poor quality work), so we discussed trying to run the trigger off the dizzy, but by the time we would have sorted this (& if it could run reliably at high rpm off the dizzy) and the expense it would be easier to sort the rewiring of the dash and go with a proven Honda Mapping software package, so we ended up opting for a P30 with Hondata S300.
The engine was put back together, the engine re-installed and off for its mapping session ( partially road mapped with the final mapping session on the dyno).
What an event that proved to be.....
Firstly a nearly new Nankang decided to delaminate its self ( I didn’t fit this BTW...LOL) on the roller, so they fitted the rear Toyo on the front and the space saver on the rear. However, this tyre was running very thin on the inner edge and I was planning to replace it when i got the car back. That didn’t happen, the tyre decide to have a blowout at some very high speeds on the dyno, luckily no-one hurt and no damage done. So the PA guys fitted two new Toyos for me. Back to four all round
The car went off again yesterday for the final mapping tweaks on the dyno and the graph made some very happy reading [smilie=hate-bravo.gif] ..... However I wont be posting this up as its not on the same dyno I used for the earlier power run. But i have seen cars run on this dyno and the power station one and Flywheel Bhps were very similar.
Hopefully collecting the car soon, but this beastie should be night and day when I get her.....
So a Mahoosive THANK YOU to ‘Performance Autoworks’, to Richie for all the hard work and help with the decision making along the way, Simon for the mapping and to Sam for the abuse and ability to eat cakes like the Cookie Monster [smilie=hate-ok.gif]
Some pics of the damage and build pics coming soon.