1992 Miata, LS1, then LS3 swapped - Page 3

mazpower · 06-02-2011, 12:24 PM

The build was done 3 weeks ago, the engine is broken in and street tuned. Still need to get it to the dyno for fine tuning and to set up a race gas-only map. The car is much faster than before. Here's a shitty cell phone video I made driving the car the other night.

My5ABaby · 06-02-2011, 03:01 PM

Makes me feel like my rotary is super reliable.

Nice build though. I'm sure that thing is ridiculously fast...

RotorDad · 06-02-2011, 03:19 PM

Nice project man, thanks for posting it.

mazpower · 06-02-2011, 03:59 PM

Quote:

Originally Posted by My5ABaby

Makes me feel like my rotary is super reliable.

Nice build though. I'm sure that thing is ridiculously fast...

Yeah I've been reminded that I could have built a really nice 20B with what I've spent on these 2 engines. The LSx engines are the same as any other performance engine and when they break, they break bad.

Thanks! I haven't dyno'd it with the stroked LS3 but I'd guess its in the 450s. Its dead even with my friend's boosted C5 Z06 that makes 703 at the wheels. I've pulled a lot of timing because of the comp ratio to be safe. It'll get turned back up on the dyno. I'm hoping for 500 on race gas with the shitty headers I've got.

Quote:

Originally Posted by RotorDad

Nice project man, thanks for posting it.

Thanks for checking it out!

My5ABaby · 06-02-2011, 04:09 PM

Quote:

Originally Posted by mazpower

Thanks! I haven't dyno'd it with the stroked LS3 but I'd guess its in the 450s. Its dead even with my friend's boosted C5 Z06 that makes 703 at the wheels. I've pulled a lot of timing because of the comp ratio to be safe. It'll get turned back up on the dyno. I'm hoping for 500 on race gas with the shitty headers I've got.

That's why I love tuned cars. Straight line, his $90,000 Z06 is comparable to the $20,000 (or whatever) build and it's not like Z06s are even that nice inside. Turns, I'll take a Miata any day. 3200lbs vs. 2500lbs...

RX7 RAGE · 06-02-2011, 04:10 PM

That's a nice LSX project you got here Glenn.

FC3S Murray · 06-02-2011, 06:04 PM

Nice build man! I cant imagine how fast a miata feels with a LSx. My FC with a cammed 2004 LS1 made 425rwhp & 417 rwtrq(corrected) and it is a fucking rocket.

So did you ever figure out what causd your #7 rod failure on your 2nd motor? Those were aftermarket rods and pistons with that stroker kit right?

mazpower · 06-02-2011, 10:04 PM

Quote:

Originally Posted by FC3S Murray

Nice build man! I cant imagine how fast a miata feels with a LSx. My FC with a cammed 2004 LS1 made 425rwhp & 417 rwtrq(corrected) and it is a fucking rocket.

So did you ever figure out what causd your #7 rod failure on your 2nd motor? Those were aftermarket rods and pistons with that stroker kit right?

Basically it ended up that quench was too tight, and there were a few times where I was in the top of 3rd and ended up in 2nd instead of 4th...from what I could tell I never went higher than 7K but who knows. I did this quite a few times trying to get the shifter figured out.

When it let go, it had been months since it happened. It's the only explanation my machinist could come up with. Rods were Scat I-Beams and pistons were Mahle. I'm running K1 H-Beams and Mahles in the latest build.

FC3S Murray · 06-03-2011, 08:29 PM

Quote:

Originally Posted by mazpower

Basically it ended up that quench was too tight, and there were a few times where I was in the top of 3rd and ended up in 2nd instead of 4th...from what I could tell I never went higher than 7K but who knows. I did this quite a few times trying to get the shifter figured out.

Aghhhh yes, I have read that mis-shifts are the #1 death of LSx's besides the dreaded oil starvation from the stock F-body pan on track event days.
You are lucky you got away with it a couple of times.

I feel you on the shifter....the damn shift gates on the T-56 are DAMN close....too close for comfort if you are required to shift/downshift with urgency and percision

You ever install an accusump or did you mod the pan?

Anyway, good job man...I wish I was near you. I would love a ride in that thing.

mazpower · 06-05-2011, 01:46 PM

Quote:

Originally Posted by FC3S Murray

Aghhhh yes, I have read that mis-shifts are the #1 death of LSx's besides the dreaded oil starvation from the stock F-body pan on track event days.
You are lucky you got away with it a couple of times.

I feel you on the shifter....the damn shift gates on the T-56 are DAMN close....too close for comfort if you are required to shift/downshift with urgency and percision

You ever install an accusump or did you mod the pan?

Anyway, good job man...I wish I was near you. I would love a ride in that thing.

I never went with a Accusump and I'm running a modified F-Body pan. Just kept it overfilled a tad. My crappy welding and the high zinc content of the stock pan finally bit me in the ass, the pan started leaking bad after the recent build. I grinded down the beads and put some JB Weld on the pan to try to fix the slight seepage I was getting before. So I ordered up a custom pan from V8 Roadsters that has trap doors for the pickup so there's no starvation...also its 7 quarts, it uses a remote filter. Its gonna be here Tuesday, I'll post some picture up.

lh6601 · 06-05-2011, 07:28 PM

You = badass.
Damn nice Miata.

FC3S Murray · 06-06-2011, 06:59 PM

Quote:

Originally Posted by mazpower

. So I ordered up a custom pan from V8 Roadsters that has trap doors for the pickup so there's no starvation...picture up.

Sweet! No worries anymore with lubrication

Duffman692002 · 06-11-2011, 07:50 PM

Quote:

Originally Posted by FC3S Murray

Sweet! No worries anymore with lubrication

Just with the crank hitting the pan.

Monkman33 · 06-11-2011, 08:45 PM

wow, you wreck v8's like most people destroy rotaries.. LOL

***TitaniumTT*** · 06-11-2011, 10:06 PM

Ahhhhhhh, I remember this build from post 29 on... I even see one of my welds

You guys have no idea how quick this car is.... it rearranged my internal organs on acceleration. The torque just doesn't stop.... it's odd.... it like not a rotary

Glad you're loving the dash Glenn.... sorry you had to see it

06-02-2011, 12:24 PM	#31
mazpower Rawr Bearclaw Join Date: Feb 2008 Location: The Souf Posts: 197 Rep Power: 18	The build was done 3 weeks ago, the engine is broken in and street tuned. Still need to get it to the dyno for fine tuning and to set up a race gas-only map. The car is much faster than before. Here's a shitty cell phone video I made driving the car the other night. __________________ Illicit Performance Rotary building, porting, tuning, chassis dyno services www.illicitperformance.com

06-02-2011, 03:01 PM	#32
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 2,377 Rep Power: 20	Makes me feel like my rotary is super reliable. Nice build though. I'm sure that thing is ridiculously fast... __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

06-02-2011, 03:19 PM	#33
RotorDad Big Ugly Join Date: Apr 2009 Location: Fredericksburg, Va Posts: 591 Rep Power: 17	Nice project man, thanks for posting it. __________________ *Boosted Big Body On 335's* PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect.

06-02-2011, 06:04 PM	#37
FC3S Murray frustrated! Join Date: Apr 2009 Location: Montana Posts: 611 Rep Power: 17	Nice build man! I cant imagine how fast a miata feels with a LSx. My FC with a cammed 2004 LS1 made 425rwhp & 417 rwtrq(corrected) and it is a fucking rocket. So did you ever figure out what causd your #7 rod failure on your 2nd motor? Those were aftermarket rods and pistons with that stroker kit right? __________________ Same pig, new soul

06-05-2011, 07:28 PM	#41
lh6601 Down with OPP Join Date: Mar 2010 Posts: 50 Rep Power: 16	You = badass. Damn nice Miata. __________________ 86 base, TII swapped, Rtek 2.1, some other things. Daily driven.

06-02-2011, 04:10 PM	#36
RX7 RAGE The Newbie Join Date: Mar 2008 Location: San Diego, CA Posts: 27 Rep Power: 0	That's a nice LSX project you got here Glenn.

06-11-2011, 08:45 PM	#44
Monkman33 Still Building my FD Join Date: Jun 2009 Location: Pasco, WA Posts: 255 Rep Power: 17	wow, you wreck v8's like most people destroy rotaries.. LOL __________________ Uh.... hi.

06-11-2011, 10:06 PM	#45
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Ahhhhhhh, I remember this build from post 29 on... I even see one of my welds You guys have no idea how quick this car is.... it rearranged my internal organs on acceleration. The torque just doesn't stop.... it's odd.... it like not a rotary Glad you're loving the dash Glenn.... sorry you had to see it __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode