|
I've been keeping this project(and myself) out of the forums for a little while now. Since I'm actually into the building stage of things, and at a point where some potentially interesting things might happen, I've decided to go ahead and post it up! Hopefully everyone gets a kick out of it, I know I'm having fun building it, and learning a ton more about cars in general. Up to this point(and continuing on, although I expect to update here more frequently), everything can be found here where I've been keeping track of things mostly for myself: http://jamesbuildsacar.wordpress.com/ A quick recap for everyone who doesn't want to read all that: The project is a Brunton Auto Stalker Classic R kit car, which is made to look like a Lotus 7. The engine is an LS3 stroker I've been building as much myself as possible. 4.00" stroke, 4.065" bore, 11.2:1 compression, forged crankshaft and connecting rods, SRP pistons(which are made by JE pistons), which brings this to a 418ci LS3 stroker, basically. The heads are stock LS3 heads I got used, with double valve springs in them that I will most likely replace with single beehives since I plan on lighter valves also. I have 1.8:1 ratio Yella Terra rockers to increase valve side lift and stabilize the valvetrain a bit, and I'm planning on running around a .595 lift cam at 114 LSA, which will come out to roughly 0.630 valve lift with the rockers, but have not completely decided since I'm new to camming engines. So if anyone wants to advise me on that, I'm open to listening. .630 might be a bit much for single springs as well. I picked this particular kit because it has a suspension set up I like(double wishbone, adjustable pushrod to inboard coilover), clears relatively wide tires more easily than a lot of 7 kits(17x10 street wheels), is lightweight at roughly 1450lbs, and fits an LS motor. Originally I spent a lot of time trying to find an F20c based kit, but nothing I found made me particularly happy, and then I would've had to go forced induction to get the power I wanted. Revelations fucked around with this message at 07:58 on Nov 25, 2013 |
#
?
Nov 25, 2013 06:58
|
|
|
|
| # ? Apr 27, 2024 16:13 |
|
|
This things gonna loving fly 
|
|
#
?
Nov 25, 2013 07:05
|
|
|
Oh dear Lord. You are one crazy SOB
|
|
#
?
Nov 25, 2013 10:35
|
|
|
This makes a TVR seem like a safe and sensible option.
|
|
#
?
Nov 25, 2013 11:52
|
|
|
HO LEE poo poo. I cannot imagine what level of performance this thing would be capable of and am definitely looking forward to this build coming together. Interesting kit. What level did you get? I didn't see it mentioned on the blog. Do they supply a basic wiring harness too, or is that up to you? Keep it coming OP!
|
|
#
?
Nov 25, 2013 12:36
|
|
|
Man one day I am going to build one of these.
|
|
#
?
Nov 25, 2013 12:57
|
|
|
I saw the title and figured "oh, someone is going to be working on a clapped out C3 or C4", not noticing who posted it. I could not be more wrong. 
|
|
#
?
Nov 25, 2013 16:28
|
|
|
Oh. My. poo poo. It's beautiful and with a .294 power to weight ratio, loving hell that's going to be a goddamn monster!
|
|
#
?
Nov 25, 2013 16:47
|
|
|
ssjonizuka posted:Interesting kit. What level did you get? I didn't see it mentioned on the blog. Do they supply a basic wiring harness too, or is that up to you? I got the level 3. It does come with wiring, and the level 3 also comes with the GM crate ECM, so I should be good there except that my engine is not stock, and to be safe I will have to fire it up for the first time at a tuning shop.
|
|
#
?
Nov 25, 2013 17:13
|
|
|
Driving it is going to be like the Stargate scene at the end of 2001 
|
|
#
?
Nov 25, 2013 17:29
|
|
|
Thought this was going to be a 'stance' thread, pleasantly surprised.
|
|
#
?
Nov 25, 2013 17:58
|
|
|
I have never before been more proud of whatever deficiency in the AIer brain causes threads like this. Bless you, sir.
|
|
#
?
Nov 25, 2013 18:03
|
|
|
You beautiful crazy bastard you. Thank you for being AI when most of us cannot.I love these builds, following through on plans most of us only dream up in a pub before common sense and a fear of immediate death stop us.
|
|
#
?
Nov 25, 2013 18:31
|
|
|
These cars are wonderful with a 200hp 4 cylinder. This? This is just amazing.
|
|
#
?
Nov 25, 2013 19:46
|
|
|
Is there a detriment to running the current valve springs? Seems like a beefier setup would do well to match your beefier rockers. e: also holy loving poo poo awesome
|
|
#
?
Nov 25, 2013 19:57
|
|
|
I had no clue what that kit car was. Then I clicked the link.  It's going to be fast
|
|
#
?
Nov 25, 2013 20:01
|
|
|
Jonontherun posted:Is there a detriment to running the current valve springs? Seems like a beefier setup would do well to match your beefier rockers. They're almost entirely unrelated. Stiffer springs are really only useful at really high RPM (and it's an OHV motor so the pushrods limit that anyway); running stiffer than necessary valve springs doesn't provide any benefit if you're not getting float, and produces extra drag on the valvetrain, which saps horsepower.
|
|
#
?
Nov 25, 2013 20:15
|
|
|
Fucknag posted:They're almost entirely unrelated. Stiffer springs are really only useful at really high RPM (and it's an OHV motor so the pushrods limit that anyway); running stiffer than necessary valve springs doesn't provide any benefit if you're not getting float, and produces extra drag on the valvetrain, which saps horsepower. Right. I would prefer to run the lighter single springs if possible, which should reduce the strain on the rockers, pushrods, and everything else valve train related, if I safely can.
|
|
#
?
Nov 25, 2013 21:35
|
|
|
Here's a couple more pictures I took last night while we installed the crank and main bearings:  600+hp crank in that
|
|
#
?
Nov 25, 2013 21:51
|
|
|
You're going to die.
|
|
#
?
Nov 25, 2013 22:00
|
|
|
jamal posted:You're going to die. We're all gonna die.
|
|
#
?
Nov 25, 2013 22:04
|
|
|
jamal posted:You're going to die. Most likely. Want to sell me seats and harnesses? You still in that business?
|
|
#
?
Nov 25, 2013 22:10
|
|
|
Sure, you have anything in particular in mind? Bride seats and takata harnesses for that JDM look? Also can get recaro, sparco, corbeau, and racequip. Honestly though it would be a good idea to find a local place that has a showroom and sit in a couple before ordering anything. Is this going to be a track only car or are you driving it around too? You can either go with a fixed motorsports seat or something a little more street oriented that reclines. It also makes a difference for harnesses- with a hans device you want narrower shoulder straps and slightly different mounting. jamal fucked around with this message at 22:42 on Nov 25, 2013 |
|
#
?
Nov 25, 2013 22:32
|
|
|
Detroit Q. Spider posted:We're all gonna die. Yes, but most of us won't do it going 140 backwards into a tree. (possibly on fire).
|
|
#
?
Nov 25, 2013 22:41
|
|
|
An Australian kit car company, Elfin, does a similar thing, but still seem to use 5.7lt LS1s instead of the LS3.
|
|
#
?
Nov 25, 2013 23:08
|
|
|
Das Volk posted:600+hp crank LOLWUT 
|
|
#
?
Nov 25, 2013 23:41
|
|
|
veedubfreak posted:Yes, but most of us won't do it going 140 backwards into a tree. (possibly on fire). The greatest way to commit suicide, ever. 
|
|
#
?
Nov 25, 2013 23:43
|
|
|
I think 140 is being a bit conservative.  
|
|
#
?
Nov 25, 2013 23:44
|
|
|
ssjonizuka posted:HO LEE poo poo. Couldn't have said it better. Terrible Robot posted:The greatest way to commit suicide, ever. Except maybe this.
|
|
#
?
Nov 25, 2013 23:44
|
|
EVERYWHERE 
|
With 600 hp crank, what kind of tire width do you have planned? Do you have any downforce plans to aid traction?
|
|
#
?
Nov 25, 2013 23:57
|
|
|
I look forward to visiting the paint smear on the side of the road that marks your final resting place soon.
|
|
#
?
Nov 26, 2013 00:13
|
|
|
jfc Going to be a monster, as an electro-nerd I am also curious to hear more about the ECM solution.
|
|
#
?
Nov 26, 2013 00:21
|
|
|
All the sudden, a cobra replica seems rational.
|
|
#
?
Nov 26, 2013 00:53
|
|
|
Detroit Q. Spider posted:We're all gonna die. Our bodies will never be ready.
|
|
#
?
Nov 26, 2013 01:15
|
|
|
Beach Bum posted:I think 140 is being a bit conservative. It's a drop-top so probably not too far off. Maybe 160? IDK.
|
|
#
?
Nov 26, 2013 01:33
|
|
|
AI is really stepping it up, the jag thread, the dautsun resto mod thread, this thread. Dang you guys.
|
|
#
?
Nov 26, 2013 01:47
|
|
|
movax posted:jfc It's pretty straightforward, actually. If he's using a crate-engine ECM then it's physically the same as the ECM you'd find in most GM products at a dealership these days, with the exception that it already is programmed not to expect to see anything else on the CAN bus (like the body control module). It's easy to reprogram the ECM (crate or otherwise) with aftermarket tools, so you just need a wiring harness with appropriate sensors. I went the other route with my LS1 swap (factory ECM + tune, modified factory harness from the donor car) but the end result is the same. With a drive-by-wire setup like the LS3 is configured for already, it's even really easy to make cruise control work. Mine is a cable throttle body still so I would need the cruise hardware, but in theory I could add it too.
|
|
#
?
Nov 26, 2013 02:35
|
|
|
jamal posted:You're going to die. He'll hit plaid!
|
|
#
?
Nov 26, 2013 03:08
|
|
|
IOwnCalculus posted:It's pretty straightforward, actually. If he's using a crate-engine ECM then it's physically the same as the ECM you'd find in most GM products at a dealership these days, with the exception that it already is programmed not to expect to see anything else on the CAN bus (like the body control module). It's easy to reprogram the ECM (crate or otherwise) with aftermarket tools, so you just need a wiring harness with appropriate sensors. Ah cool, that is surprisingly sane and pleasant of GM to offer. Didn't know if it would be chock full of DTCs or other flags persistently because the BCM/TCM/etc don't happen to exist.
|
|
#
?
Nov 26, 2013 03:34
|
|
|
|
| # ? Apr 27, 2024 16:13 |
|
|
I don't know why GM does it, but yeah they have had some of the easiest-to-program ECMs out there for ages. Even their 30-year-old ones had socketed chips so you could just swap them, but everything since the LT1 has been programmable with the right software / hardware. It's also trivial to disable DTCs in them, which is great if you want to do something like put a massive cam and headers on a street-driven, emissions-tested car  TCM on a lot of GM automatics is actually handled by the ECM directly - I think the 4L80 might be the exception, but in my case the LS1 ECM handles engine and transmission together. If I were to swap to a non-4L60E gearbox I could just flash the ECM to treat it as a manual. Speaking of which, so I don't derail this too badly, what are you going to do for a gearbox? Technically a stock T-56 won't live with this power, but you are running half the weight it was meant to deal with. TR-6060? Magnum T-56?
|
|
#
?
Nov 26, 2013 03:45
|
|