evo 9 hillclimb build log
#332
finally got some seat time in the car. as you can imagine we have a LOT of tuning to do with all of the changes we made. The biggest suspension change we made was going to the SSB front end (Dallas).
For those that havent followed his other threads they correct the suspension geometry issues that plague evos. And they are lighter and look *****en too so its a win-win-win
first off for the weight weenies out there like us they save approx 5.5lbs/ side for the uprights and 1lb each side for the control arm.
The biggest advantage is the increase front end grip - and they offer a lot of it. For our baseline we are at-3.2 camber and used the medium caster plates (15mm iirc). I cut them out on a laser since there wasnt any need to machine parts. The first thing i noticed was the turn-in. It is so crisp and tight. On quick transitions there wasnt perceivable slipping until it gripped - just grip. So much grip in fact that i almost spun out a few times trying to get the car dialed in! lol It was my first time at a track driving with nasa and they probably thought i was a noob the way i was getting the back end out. After a few sessions of adjusting the tires/compression/rebound we got the back settled down and put in some decent laps. There is still more for us to get sorted out but the first day of testing was super impressive!
For those that havent followed his other threads they correct the suspension geometry issues that plague evos. And they are lighter and look *****en too so its a win-win-win
first off for the weight weenies out there like us they save approx 5.5lbs/ side for the uprights and 1lb each side for the control arm.
The biggest advantage is the increase front end grip - and they offer a lot of it. For our baseline we are at-3.2 camber and used the medium caster plates (15mm iirc). I cut them out on a laser since there wasnt any need to machine parts. The first thing i noticed was the turn-in. It is so crisp and tight. On quick transitions there wasnt perceivable slipping until it gripped - just grip. So much grip in fact that i almost spun out a few times trying to get the car dialed in! lol It was my first time at a track driving with nasa and they probably thought i was a noob the way i was getting the back end out. After a few sessions of adjusting the tires/compression/rebound we got the back settled down and put in some decent laps. There is still more for us to get sorted out but the first day of testing was super impressive!
#336
Evolved Member
iTrader: (21)
What fans are you using for the rear mounted radiator?
How are you powering the fans (second alternator, larger alternator, etc.)?
You using just on/off control for the fans or a temp controller?
You using the stock water pump or a booster pump for the increased circulation distance?
How are you powering the fans (second alternator, larger alternator, etc.)?
You using just on/off control for the fans or a temp controller?
You using the stock water pump or a booster pump for the increased circulation distance?
#337
What fans are you using for the rear mounted radiator?
How are you powering the fans (second alternator, larger alternator, etc.)?
You using just on/off control for the fans or a temp controller?
You using the stock water pump or a booster pump for the increased circulation distance?
How are you powering the fans (second alternator, larger alternator, etc.)?
You using just on/off control for the fans or a temp controller?
You using the stock water pump or a booster pump for the increased circulation distance?
What fans are you using for the rear mounted radiator?
spal 14" fans. They are pulling 1800cfm
How are you powering the fans (second alternator, larger alternator, etc.)?
This was the topic of a LOT of thought/discussion/debate. each fan pulls 21AMP. They are staged off of the Haltech - one at 180 and the other at 200. In the testing this weekend at UMC (formerly Miller Motorsports) we were running 179-182 pushing pretty hard for a 20 minute session. It was around 70-80-deg outside. Pikes will have much less dense air, more loading on the engine, and slower speeds (at times). The second fan will most likely be working at pikes. As far as the alternator i looked into the aftermarket options and was not confident they would hold up to what us motorsports guys put them though - higher sustained RPM. So we went with a 44amp hour battery. The weight is a little over double than the small battery we ran last season but it will provide a margin of safety. Hopefully its enough!
You using just on/off control for the fans or a temp controller?
controlled off of the haltech. Staged.
You using the stock water pump or a booster pump for the increased circulation distance?
Stock water pump. We did a visual inspection of the flow at the back of the system and it was flowing a lot of water. We looked into an external electric pump but i was super worried about that route given the already elevated electrical load. we also upped the line size to reduce the friction losses given the larger distance.
#338
Evolved Member
iTrader: (21)
What fans are you using for the rear mounted radiator?
spal 14" fans. They are pulling 1800cfm
How are you powering the fans (second alternator, larger alternator, etc.)?
This was the topic of a LOT of thought/discussion/debate. each fan pulls 21AMP. They are staged off of the Haltech - one at 180 and the other at 200. In the testing this weekend at UMC (formerly Miller Motorsports) we were running 179-182 pushing pretty hard for a 20 minute session. It was around 70-80-deg outside. Pikes will have much less dense air, more loading on the engine, and slower speeds (at times). The second fan will most likely be working at pikes. As far as the alternator i looked into the aftermarket options and was not confident they would hold up to what us motorsports guys put them though - higher sustained RPM. So we went with a 44amp hour battery. The weight is a little over double than the small battery we ran last season but it will provide a margin of safety. Hopefully its enough!
spal 14" fans. They are pulling 1800cfm
How are you powering the fans (second alternator, larger alternator, etc.)?
This was the topic of a LOT of thought/discussion/debate. each fan pulls 21AMP. They are staged off of the Haltech - one at 180 and the other at 200. In the testing this weekend at UMC (formerly Miller Motorsports) we were running 179-182 pushing pretty hard for a 20 minute session. It was around 70-80-deg outside. Pikes will have much less dense air, more loading on the engine, and slower speeds (at times). The second fan will most likely be working at pikes. As far as the alternator i looked into the aftermarket options and was not confident they would hold up to what us motorsports guys put them though - higher sustained RPM. So we went with a 44amp hour battery. The weight is a little over double than the small battery we ran last season but it will provide a margin of safety. Hopefully its enough!
I have serious concerns about aftermarket, higher amperage, alternator options available to Evos as well. A 2nd alternator for the cooling system (and possibly electronic power steering) would seem to be a better solution but a bit more weight. Alternatively, could try to find an alternator that the baja trucks use and like and build a bracket to mount in stock location (rated around 200A).
Good news that 3600CFM seems to work. You will have to keep us updated on that. I was looking at 2010 Ford F150 fans that pull 6000cfm and draw a little over 60A.
#339
Interesting that you are using a battery. Solves a lot of problems and if you have defined duration run times then it will likely be the most reliable option. Is it a separate battery for the fans or shared with the rest of your system?
I have serious concerns about aftermarket, higher amperage, alternator options available to Evos as well. A 2nd alternator for the cooling system (and possibly electronic power steering) would seem to be a better solution but a bit more weight. Alternatively, could try to find an alternator that the baja trucks use and like and build a bracket to mount in stock location (rated around 200A).
Good news that 3600CFM seems to work. You will have to keep us updated on that. I was looking at 2010 Ford F150 fans that pull 6000cfm and draw a little over 60A.
I have serious concerns about aftermarket, higher amperage, alternator options available to Evos as well. A 2nd alternator for the cooling system (and possibly electronic power steering) would seem to be a better solution but a bit more weight. Alternatively, could try to find an alternator that the baja trucks use and like and build a bracket to mount in stock location (rated around 200A).
Good news that 3600CFM seems to work. You will have to keep us updated on that. I was looking at 2010 Ford F150 fans that pull 6000cfm and draw a little over 60A.
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codgi (Jun 24, 2017)
#344
EvoM Guru
iTrader: (1)
Was about to suggest this. Trophy trucks use a second alternator driven by the driveshaft. Need to have controlled by the ECU though so it doesn't see load below a certain speed, or they burn up quick.