DJ Wilmas 111S S2 T series 400bhp Elise
Discussion
Well after the Ported Head i purchase was a dud, i decided to go all gung ho and get a new head ported by Jason Hellier of Hellier Performance as he is 20 mins from my house and i have heard good things about him. He is also good friends with Rog from Sabre heads and i would like to thank rog for his help.
Anyway, i asked for Jason to Flow Test the new head, the old cracked one (supposedly a GBE head, but its not) and the std head to see what flows i would get. The cams i have are 260 degree 285M Piper re-grinds with just under 10mm lift so figures at 400 thou are roughly this.
The std head flows ok, the cracked head did well on the inlet but basically bugger all improvement on the exhaust even though massive amount of metal was removed. Luckily Jason spotted this and his head flows approx 20% more than the std head on the inlet and exhaust so i cant complain. All test were done on the Janspeed Flow tester in CFM
Cams were set up and measured, took a day apparently, single piper springs (157lb @ 10mm vs 128lb std springs) with modified std caps for a 7500rpm limit.
But i now have a solid tested head so i hope this helps with the lack of top end revs.
Car is with JDM Dyno in Cumbria who will strip the head and re-dyno with a few other minor mods
Anyway, i asked for Jason to Flow Test the new head, the old cracked one (supposedly a GBE head, but its not) and the std head to see what flows i would get. The cams i have are 260 degree 285M Piper re-grinds with just under 10mm lift so figures at 400 thou are roughly this.
The std head flows ok, the cracked head did well on the inlet but basically bugger all improvement on the exhaust even though massive amount of metal was removed. Luckily Jason spotted this and his head flows approx 20% more than the std head on the inlet and exhaust so i cant complain. All test were done on the Janspeed Flow tester in CFM
Cams were set up and measured, took a day apparently, single piper springs (157lb @ 10mm vs 128lb std springs) with modified std caps for a 7500rpm limit.
But i now have a solid tested head so i hope this helps with the lack of top end revs.
Car is with JDM Dyno in Cumbria who will strip the head and re-dyno with a few other minor mods
Edited by djwilma on Tuesday 12th November 20:56
Currently sat in Sportomotives Reception with the car on the ramps, they very kindly booked it in at short notice
Not quite gone according to plan as the castors are out on the front and the worst wheel is the front right which had the crash damage, no surprises. Little bit of bonding on to the left of the right top wishbone which i assume was done after the crash is not the usual bond.
Rears were a little out too.....
Also fitted the Uprated Rear Toe Links but, and no surprise, as the car is a late 2005 it turns out it needed the taper bolts not the older style ones which came with the kit.
Not quite gone according to plan as the castors are out on the front and the worst wheel is the front right which had the crash damage, no surprises. Little bit of bonding on to the left of the right top wishbone which i assume was done after the crash is not the usual bond.
Rears were a little out too.....
Also fitted the Uprated Rear Toe Links but, and no surprise, as the car is a late 2005 it turns out it needed the taper bolts not the older style ones which came with the kit.
Well after the Ported Head i purchase was a dud, i decided to go all gung ho and get a new head ported by Jason Hellier of Hellier Performance as he is 20 mins from my house and i have heard good things about him. He is also good friends with Rog from Sabre heads and i would like to thank rog for his help.
Anyway, i asked for Jason to Flow Test the new head, the old cracked one (supposedly a GBE head, but its not) and the std head to see what flows i would get. The cams i have are 260 degree 285M Piper re-grinds with just under 10mm lift so figures at 400 thou are roughly this.
The std head flows ok, the cracked head did well on the inlet but basically bugger all improvement on the exhaust even though massive amount of metal was removed. Luckily Jason spotted this and his head flows approx 20% more than the std head on the inlet and exhaust so i cant complain. All test were done on the Janspeed Flow tester in CFM
Cams were set up and measured, took a day apparently, single piper springs (157lb @ 10mm vs 128lb std springs) with modified std caps for a 7500rpm limit.
But i now have a solid tested head so i hope this helps with the lack of top end revs.
Car is with JDM Dyno in Cumbria who will strip the head and re-dyno with a few other minor mods
Anyway, i asked for Jason to Flow Test the new head, the old cracked one (supposedly a GBE head, but its not) and the std head to see what flows i would get. The cams i have are 260 degree 285M Piper re-grinds with just under 10mm lift so figures at 400 thou are roughly this.
The std head flows ok, the cracked head did well on the inlet but basically bugger all improvement on the exhaust even though massive amount of metal was removed. Luckily Jason spotted this and his head flows approx 20% more than the std head on the inlet and exhaust so i cant complain. All test were done on the Janspeed Flow tester in CFM
Cams were set up and measured, took a day apparently, single piper springs (157lb @ 10mm vs 128lb std springs) with modified std caps for a 7500rpm limit.
But i now have a solid tested head so i hope this helps with the lack of top end revs.
Car is with JDM Dyno in Cumbria who will strip the head and re-dyno with a few other minor mods
Well the head is off and new head going on tomorrow
Looks like the old head had been ported slightly
Exhaust manifold was warped, its been skimmed and ready to go back on
Oil leak was not what I expected. The cam carrier was leaking, but small amounts. Main problem was it was coming out the dipstick straight onto the exhaust manifold....so will add a couple of breathers.
Should be on the rollers on Friday for 400bhp........
Looks like the old head had been ported slightly
Exhaust manifold was warped, its been skimmed and ready to go back on
Oil leak was not what I expected. The cam carrier was leaking, but small amounts. Main problem was it was coming out the dipstick straight onto the exhaust manifold....so will add a couple of breathers.
Should be on the rollers on Friday for 400bhp........
Good news is that I was kindly sent me an S2 wishbone to compare with the existing one and it was slightly longer than the one fitted, so seems you the wishbone was an S1 item hence not being able to get negative camber
Bad news is that the original cams in the engine may not have been the piper 270 ones as they are not stamped by piper on the end. But this will be good news as the cams could be std so happy with the power it was making esp as the head only has a light port
Car will go back to Sportomotive to have the Geo corrected properly. Will then drive it for a few weeks and see what its like, then next year take it to one of the know how guys and get it setup how i want it. Secretly hoping the 340R settings will be good enough though :nana
Hoping the dipstick oil issue is windage and oil levels but its a worry as its a strange one, but it should be on the rollers this afternoon may even get a couple of power runs and hopeful to go over the 400bhp possibly slightly more if the engine will rev to the 7500rpm i would like :bc
Bad news is that the original cams in the engine may not have been the piper 270 ones as they are not stamped by piper on the end. But this will be good news as the cams could be std so happy with the power it was making esp as the head only has a light port
Car will go back to Sportomotive to have the Geo corrected properly. Will then drive it for a few weeks and see what its like, then next year take it to one of the know how guys and get it setup how i want it. Secretly hoping the 340R settings will be good enough though :nana
Hoping the dipstick oil issue is windage and oil levels but its a worry as its a strange one, but it should be on the rollers this afternoon may even get a couple of power runs and hopeful to go over the 400bhp possibly slightly more if the engine will rev to the 7500rpm i would like :bc
Thanks for the posts
This is what happened today.....low boost is 11psi so spot the problem
Looks like the std garrett wastegate is too small and now I am getting more flow through the head it just cant cope so backed out at 6000rpm.
Still 360bhp but at 19psi so really have no control ovet boost
So ordered an external wastegate and will get this fitted next week.
This is what happened today.....low boost is 11psi so spot the problem
Looks like the std garrett wastegate is too small and now I am getting more flow through the head it just cant cope so backed out at 6000rpm.
Still 360bhp but at 19psi so really have no control ovet boost
So ordered an external wastegate and will get this fitted next week.
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