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Skinners Sprint Micra
- Thread starter Skinner_87
- Start date
Shameless plug really
Unsure of individual availability/price but I can look into it for all interested
www.brightsparkracing.co.uk/parts-services/micra-parts-services/
Unsure of individual availability/price but I can look into it for all interested
www.brightsparkracing.co.uk/parts-services/micra-parts-services/
OP
OP
Putting the new bearings in the gearbox tonight and spotted something with the diff:
Gripper LSD Micra Race spec says 40/60 on the box re ramp angles but looking at the side of the diff I can see 40 on one side and 30 on the other.
Am I missing something or is it possible the wrong ramps are in there?
Gripper LSD Micra Race spec says 40/60 on the box re ramp angles but looking at the side of the diff I can see 40 on one side and 30 on the other.
Am I missing something or is it possible the wrong ramps are in there?
Attachments
Silly question paul....
Is there any good reason why i cant do a reverse flow cylinder head on the cga3?
Mich like the old janspeed btcc primera.
So you can run throttle bodies with long runners out the bonnet without removing the brake booster and a straight enough exhaust routing out the back?
I know the exhaust valves would need to be increased in size and hardened (two lots of exhaust valves?) Also cams would be 180deg out... and lots of porting required. But i really cant see a downside.
Can you?
Sent from my SM-G920F using Tapatalk
Is there any good reason why i cant do a reverse flow cylinder head on the cga3?
Mich like the old janspeed btcc primera.
So you can run throttle bodies with long runners out the bonnet without removing the brake booster and a straight enough exhaust routing out the back?
I know the exhaust valves would need to be increased in size and hardened (two lots of exhaust valves?) Also cams would be 180deg out... and lots of porting required. But i really cant see a downside.
Can you?
Sent from my SM-G920F using Tapatalk
OP
OP
Nearly prepped Matt.
New suspensions on im just playing with damping rates at the moment & tyre pressures. R888R's 185/60/14 are scrubbing in well & im impressed with the grip.
The LSD is taking some getting used to its a bit of a hand full.
I've hired a HANS device as well so im keen to see how that fits and get ready for scrut on Wed night or Thurs Morning
New suspensions on im just playing with damping rates at the moment & tyre pressures. R888R's 185/60/14 are scrubbing in well & im impressed with the grip.
The LSD is taking some getting used to
its a bit of a hand full.I've hired a HANS device as well so im keen to see how that fits and get ready for scrut on Wed night or Thurs Morning
OP
OP
This is worth a read fella.....
http://www.marklamond.co.uk/misc/scans/CCC_1999_Feb_Touring_Car_Engines.pdf
http://www.marklamond.co.uk/misc/scans/CCC_1999_Feb_Touring_Car_Engines.pdf
OP
OP
Bit of research and chat today about specing the car up. It's been untouched really bar the suspension and diff.
72.12mm bore forged pistons and rods to go into the CGA3 block.
A slight skin on the head as the bloc has 20thou removed already.
Aiming for 12.3:1 compression ratio.
An updated pump is sat in the garage and the injectors will go for a clean and test.
Also looking at options for a 200mm clutch or a beefier 180mm.
Engine to come out this month to be machines for the above. I can set to port matching the inlet mani to the head as well as that is standard shape at the moment.
Lots to do but I'm sure April will come around quickly
72.12mm bore forged pistons and rods to go into the CGA3 block.
A slight skin on the head as the bloc has 20thou removed already.
Aiming for 12.3:1 compression ratio.
An updated pump is sat in the garage and the injectors will go for a clean and test.
Also looking at options for a 200mm clutch or a beefier 180mm.
Engine to come out this month to be machines for the above. I can set to port matching the inlet mani to the head as well as that is standard shape at the moment.
Lots to do but I'm sure April will come around quickly
Very similar sized rad to what I'm using Paul. Ignore the slight angle, it was a WIP shot. Twin fans drop temps down much more efficiently and free up a good deal of extra room at the front of the bay for work in.
Will be interesting to see how much machining work is needed on the pistons. Design may have changed since I last looked but there's some additional meat on the crowns for setting the comp ratio.
Will be interesting to see how much machining work is needed on the pistons. Design may have changed since I last looked but there's some additional meat on the crowns for setting the comp ratio.
adding from my exp with high engine output,
the 180mm clutch had limited capacity and durability.
although my 200mm helix clutch can definately handle the torque reliably with durability, the PP is very!! heavy and long throw, which means the cable wears out faster and requires frequent oiling and maybe reinforcements.
another option would be like sirchris's multiplate clutches?
the 180mm clutch had limited capacity and durability.
although my 200mm helix clutch can definately handle the torque reliably with durability, the PP is very!! heavy and long throw, which means the cable wears out faster and requires frequent oiling and maybe reinforcements.
another option would be like sirchris's multiplate clutches?
lol tis a good work out driving it daily. just about the only sort of exercise I get these days
when I used to have the helix paddle clutch yrs ago and the cable was really sticking (this was before I found out about oiling the cable) the pedal was twice as heavy to push down so you can imagine how my leg was shaking during a long traffic jam going home (I almost couldn't drive it) and how the cable rivet eventually sheared off.
when I used to have the helix paddle clutch yrs ago and the cable was really sticking (this was before I found out about oiling the cable) the pedal was twice as heavy to push down so you can imagine how my leg was shaking during a long traffic jam going home (I almost couldn't drive it) and how the cable rivet eventually sheared off.
