CLR Motorsports engine is in and running!
04-19-05, 07:51 AM
#51
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You are waiting for a map from me? I am at about 375 miles on the engine currently and will start to tune at 1000 miles. I do run the negative split currently as it is only used in vacuum anyway.
For the double throttle trigger, I am using a small digital pressure gauge. It will require a relay but it is fully digital and very inexpensive. I can set boost in .2psi increments. I will get you a link. A forum member turned me on to it.
The engine is back in the car again (pilot bearing!) with the new oil pan as well. Turns out my old oil pan was not the oil leak culprit and I am too ashamed to say what the real culprit was!
Anyway, a few images.....
For the double throttle trigger, I am using a small digital pressure gauge. It will require a relay but it is fully digital and very inexpensive. I can set boost in .2psi increments. I will get you a link. A forum member turned me on to it.
The engine is back in the car again (pilot bearing!) with the new oil pan as well. Turns out my old oil pan was not the oil leak culprit and I am too ashamed to say what the real culprit was!
Anyway, a few images.....
04-19-05, 07:55 AM
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Thought I would post some images of the motor mounts since I have had about 200 requests. Makes it much easier when the engine is out 
Oil pan is a quality piece and no leaks! It does sit below the subframe which means I will have to be extra careful. If you look close, the freeze plugs are evident on the rear of the pan. They are not really necessary as the o ring runs inboard of the holes but I was not taking any chances. I used silicone around the perimeter as my bottom was not 100% flat. Ralph at Xcessive also mentioned the pans come without holes. If someone has a Cosmo gasket lying around, send it to him and he can have the pans made for Cosmo 13B in an FD bolt pattern. I did end up drilling one additional hole at the rear (now there are four) to secure the rear of the pan. Torqued to factory specs.
Oil pan is a quality piece and no leaks! It does sit below the subframe which means I will have to be extra careful. If you look close, the freeze plugs are evident on the rear of the pan. They are not really necessary as the o ring runs inboard of the holes but I was not taking any chances. I used silicone around the perimeter as my bottom was not 100% flat. Ralph at Xcessive also mentioned the pans come without holes. If someone has a Cosmo gasket lying around, send it to him and he can have the pans made for Cosmo 13B in an FD bolt pattern. I did end up drilling one additional hole at the rear (now there are four) to secure the rear of the pan. Torqued to factory specs.
04-19-05, 03:08 PM
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Steph, did you ever find Carlos there? Here is a pic of him (left) and Rick (center). Cannot remember who the guy on the right is. Also, here is a pic of the Mazda LMP2 prototype, Rick in the back standing with Mrs. Lopez . Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...
. Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...
04-19-05, 03:18 PM
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Steph, did you ever find Carlos there? Here is a pic of him (left) and Rick (center). Cannot remember who the guy on the right is. Also, here is a pic of the Mazda LMP2 prototype, Rick in the back standing with Mrs. Lopez . Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...
. Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...
04-19-05, 08:24 PM
#55
Originally Posted by rx7tt95
Steph, did you ever find Carlos there? Here is a pic of him (left) and Rick (center). Cannot remember who the guy on the right is. Also, here is a pic of the Mazda LMP2 prototype, Rick in the back standing with Mrs. Lopez . Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...
. Carlos said this thing will have to breathe through a restrictor about 2 inches in diameter! The winning Toyota ran a turbo 4 and had an even smaller restrictor. Crazy...From right to left:
1) [R] Dr. Francesco Iannetti, Design Ideas, Raleigh NC.
2) [C] Rick Engman, Downing Atlanta, Atlanta GA.
3) [L] Carlos Lopez, CLR. Motorsport Inc., Miami Fl.
05-01-05, 10:11 PM
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Motor has over 1K on it...I've begun to delve into some serious tuning (street) and when I get things "close", I'll head to the dyno. Currently pushing a very modest .75kg and the car is surprisingly smooth and fast under boost. I know I'm nowhere near the engine's sweet spot however and Carlos has a feeling it'll come alive at about 15psi. I'm going to have to reconfigure my PFC tables to go up to 24psi or so...really wish this ECU had a bit more resolution. A/F ratios are still very rich as the exhaust note doesn't have that edge to it yet. Timing may need a bit more advance as well. Knock is non-existent according to the PFC.
Ran over to Homestead Speedway this weekend to do a track event (shooting it) and managed to get pretty respectable gas mileage numbers, especially on the way back while cruising at between 80 and 85 miles per hour. My a/f ratios had been in the low 14's but I ended up with the mid-15's at cruise. EGT's went down about 50 degrees celsius by leaning it out surprisingly. I think I need a bit more advance to bring them down further (750C). Car ran a constant coolant temp the whole way there and back (2 hour trip) even with the a/c on this afternoon.
Hopefully I'll have some decent numbers soon for the engine and the plain bearing GT4088! I might coerce Carlos into doing the final tune (I know you're reading!).
Michel
Ran over to Homestead Speedway this weekend to do a track event (shooting it) and managed to get pretty respectable gas mileage numbers, especially on the way back while cruising at between 80 and 85 miles per hour. My a/f ratios had been in the low 14's but I ended up with the mid-15's at cruise. EGT's went down about 50 degrees celsius by leaning it out surprisingly. I think I need a bit more advance to bring them down further (750C). Car ran a constant coolant temp the whole way there and back (2 hour trip) even with the a/c on this afternoon.
Hopefully I'll have some decent numbers soon for the engine and the plain bearing GT4088! I might coerce Carlos into doing the final tune (I know you're reading!).
Michel
05-11-05, 12:53 PM
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"EGT's went down about 50 degrees celsius by leaning it out surprisingly. I think I need a bit more advance to bring them down further (750C). "
Might be caused by fuel burning in header.
My 12A N/A racer only went down to 750 if my foot was off the throttle for 5mins!
Highest was about 980C
Might be caused by fuel burning in header.
My 12A N/A racer only went down to 750 if my foot was off the throttle for 5mins!
Highest was about 980C
05-15-05, 01:09 PM
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Yeah the EGT's were a combination of fuel and timing. I had to go out of town on family emergency and just returned today. The new spark plugs are here (BR10EIX) and I have to make one other (secret) modification per CLR's instructions before tuning 15psi and higher. I have a few days off so I'm going to try and finalize the tuning up to 15psi. I'm just glad the car is stupid fast at 10psi. Keeps me happy and allows me the patience to tune slowly and not do something stupid!
05-16-05, 07:08 PM
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Have the irridium plugs in and the car runs pretty good with them...hitting the dyno tomorrow morning for tuning in the vacuum and boost areas up to 15psi. As is, I'm tuned to 10psi. The good news is I have the dyno at my disposal all morning. It's a Clayton eddy-current so it's essentially a rolling road capable of load/hold and inertia-style runs. The BAD news is the dyno coils are being rewound/rebuilt so no hp readings! It'll give me an opportunity to dial in the fuel, timing and EGT. I'll mess around with the fine stuff the following week when the new coils are back in the dyno. I should also have the last coolant mod in place by then and will be able to tune at higher boost levels, around 20psi. At 10psi, I have a bit of traction in first gear but it'll still break the tires loose coming on boost in 2nd. I'm currently waiting not so patiently for Falken to release their new tire (615) in the 265/35 size but I might have to bite the bullet and purchase something else, maybe the PZero Corsas as they're inexpensive. We're getting into the rainy season at the end of the month and I know the Falkens do well in the wet and apparently warm up quickly like a true road tire.
05-17-05, 03:32 PM
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Is the secret modification open to guesses??
Originally Posted by rx7tt95
Yeah the EGT's were a combination of fuel and timing. I had to go out of town on family emergency and just returned today. The new spark plugs are here (BR10EIX) and I have to make one other (secret) modification per CLR's instructions before tuning 15psi and higher. I have a few days off so I'm going to try and finalize the tuning up to 15psi. I'm just glad the car is stupid fast at 10psi. Keeps me happy and allows me the patience to tune slowly and not do something stupid!
Last edited by JBurer; 05-17-05 at 03:36 PM.
05-17-05, 09:48 PM
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Sure, you can guess... I'll have to defer to Carlos if it's ok to let the cat out of the bag. I paid good/big money for the engine and his expertise so unless it's ok with him, I don't share all the information. BUT, Carlos is very forthcoming as he hates disinformation even more than me!
I'll have to defer to Carlos if it's ok to let the cat out of the bag. I paid good/big money for the engine and his expertise so unless it's ok with him, I don't share all the information. BUT, Carlos is very forthcoming as he hates disinformation even more than me!
05-18-05, 09:40 AM
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I'd guess that he instructed you to set the trailing ignition up on a pressure switch. When the boost pressure passes a certain value, the trailing ignition is cut.
I'm basing my guess on the way he set up Douglas Arditti's car.
Am I right?
I'm basing my guess on the way he set up Douglas Arditti's car.
Am I right?
Originally Posted by rx7tt95
Sure, you can guess... I'll have to defer to Carlos if it's ok to let the cat out of the bag. I paid good/big money for the engine and his expertise so unless it's ok with him, I don't share all the information. BUT, Carlos is very forthcoming as he hates disinformation even more than me!
I'll have to defer to Carlos if it's ok to let the cat out of the bag. I paid good/big money for the engine and his expertise so unless it's ok with him, I don't share all the information. BUT, Carlos is very forthcoming as he hates disinformation even more than me!
05-18-05, 09:51 AM
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Actually no! It's a cooling modification I have to make. I do have a pressure switch but that will be used for the double throttle once I get everything configured. That was a good "guess" though.
05-18-05, 10:07 AM
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Oh forgot to mention..dyno tuning yesterday was a wash. With the coils out, the 'flywheel" was also off the rollers. I spun the rollers up so quickly I was building boost much later than normal. I had to do runs in 5th gear and even then....so I'll wait til she gets back together and head over next week for another tuning session, hopefully with hp numbers.
One thing I have noticed is that the duty cycles needed on the AVC-R for my hybrid GT40 turbo (4088 52 trim compressor, 4082 turbine with a .94 housing) are much higher than needed for the GT4082. I thought there was an issue with the boost controller as I could not hit my intended boost numbers. Later I cranked up the duty cycles to get it above wastegate spring pressure of .7kg. The thought of putting my 1.1kg spring back in the wastegate, while on the car, horrifies me. It's hard enough to do it with the wastegate out of the car.
One thing I have noticed is that the duty cycles needed on the AVC-R for my hybrid GT40 turbo (4088 52 trim compressor, 4082 turbine with a .94 housing) are much higher than needed for the GT4082. I thought there was an issue with the boost controller as I could not hit my intended boost numbers. Later I cranked up the duty cycles to get it above wastegate spring pressure of .7kg. The thought of putting my 1.1kg spring back in the wastegate, while on the car, horrifies me. It's hard enough to do it with the wastegate out of the car.
05-19-05, 09:57 AM
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You've got me there then, Michel.
If Carlos doesn't mind you sharing, let us know what the modification he suggests is!
Best,
John
If Carlos doesn't mind you sharing, let us know what the modification he suggests is!
Best,
John
Originally Posted by rx7tt95
Actually no! It's a cooling modification I have to make. I do have a pressure switch but that will be used for the double throttle once I get everything configured. That was a good "guess" though.
05-19-05, 03:32 PM
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If you are in need of a dyno and don't mind the drive just let me know. You could even arrange for Carlos to meet you there, as its not that far of a drive.
05-20-05, 01:47 AM
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Originally Posted by dvls-7
If you are in need of a dyno and don't mind the drive just let me know. You could even arrange for Carlos to meet you there, as its not that far of a drive.
05-20-05, 10:05 PM
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Carlos chimed in and this one is staying a secret :-) The one you mentioned is "old" tech and not necessary with the modern ECU. What does Cartek charge per hour? I'm going to go over and help put the new coils on my local dyno next Tuesday (since I get free dyno time there I thought I'd reciprocate and help the shop out) and will probably tune again Wednesday morning, this time with hp outputs.
05-21-05, 10:01 PM
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Originally Posted by rx7tt95
Carlos chimed in and this one is staying a secret :-) The one you mentioned is "old" tech and not necessary with the modern ECU. What does Cartek charge per hour? I'm going to go over and help put the new coils on my local dyno next Tuesday (since I get free dyno time there I thought I'd reciprocate and help the shop out) and will probably tune again Wednesday morning, this time with hp outputs.
Sucks that it'll be a while before I can use it...