|
Re: Mark's 1G Winter Projects
Quote:
http://www.jegs.com/i/Chevrolet+Perf...hDNRoCiHPw_wcB |
Re: Mark's 1G Winter Projects
Quote:
|
Re: Mark's 1G Winter Projects
Quote:
|
Re: Mark's 1G Winter Projects
Not too bad, however I can get one for around that price, with a vin, and lots of other body panels!
|
Re: Mark's 1G Winter Projects
Quote:
I used the cheapest woodward fab tubing notcher and decent quality hole saws. Milwaukee hole saws have worked good. |
Re: Mark's 1G Winter Projects
It’s been awhile since my last update. I dropped my block off to MAP to be machined for the new 2.2L HD pistons and one thing led to another and MAP completed the entire long block for me! Alex did a great job measuring everything on the motor. I can’t say enough how happy I am with the precision measurement, over all quality and focus on details that Alex, Eric and the other MAP members have. I don’t trust too many people or shops, as I do everything that I can myself, but I can say with confidence that MAP’s engine program is world class.
The engine is an: • Eagle 94mm 6-bolt crank • 9.75:1 Wiesco HD2 pistons • 1/2” head studs • ¾ filled block • R&R 153mm aluminum rods • Stage 5 MAP cylinder head, with Inconel exhaust valves and the deck surface has been stinted. • No O-rings, Felpro Permatorque gasket • GSC S3 cams • Kiggley HLA & 12 tooth trigger crank sensor • 200W heater in the oil pan with an oil temperature sensor. The motor is in the car now and all ready to be started. http://i412.photobucket.com/albums/p...401_170822.jpg This weekend I finished up the fabrication on the 3000Gt rearend. It’s huge compared to the factory 1G unit. My Pro Stage 5 axles will be custom machined for the new rear. The last rear end only lasted 5 passes. I kept breaking the spider gears and I didn’t want to weld the diff and have ring and pinion failures. http://i412.photobucket.com/albums/p...405_161152.jpg The car is almost down 100lbs too! I want to break my cage certification. Sub 8.50’s here I come!!!! |
Re: Mark's 1G Winter Projects
What are the measurements on the 3kgt rear end compared to a 1g rear end? That rear end should hold a lot more better I would think.
|
Re: Mark's 1G Winter Projects
Quote:
|
Re: Mark's 1G Winter Projects
Looks great mark !!
|
Re: Mark's 1G Winter Projects
Amazing build.
Can't wait to see you beat that cage cert. |
Re: Mark's 1G Winter Projects
Another 100 pounds?!?!?! You crazy son!
I'll give a +1 to MAP's engine building program; Alex built both of the 2.0's for my X and I've had nothing but good luck and solid performance from them. |
Re: Mark's 1G Winter Projects
So awesome, love this!
|
Re: Mark's 1G Winter Projects
Badass, simply badass.
|
Re: Mark's 1G Winter Projects
So clean, good luck this season!
|
Re: Mark's 1G Winter Projects
Quote:
|
Re: Mark's 1G Winter Projects
I love how you build most all your parts Mark. I wish I was more handy in the fabrication department to do that. It makes it that much more satisfying when you run what you do.
|
Re: Mark's 1G Winter Projects
Forgot to ask, how are you bolting up the rear section of the driveshaft? Do the 3kgt and 1g have the same pilot and mounting bolt on the pinion flange?
|
Re: Mark's 1G Winter Projects
Quote:
The mounting of the rear end is where it gets difficult. No bolt holes line up and you basically start over with the fabrication of the mounting. The rearend needs to be modified so that it fits the smaller 1G subframe. I ended up cutting two of the mounting points on the nose of the rearend because they protruded out too far and were interfering with the subframe. There a total of three points on each side, so I wasn’t too worried that I’m not using all the points. |
Re: Mark's 1G Winter Projects
I'm not familiar with 'stinting' the deck surface, can you explain or provide pictures?
what's the reason for the oil heater? Reduce warmup time before runs? |
Re: Mark's 1G Winter Projects
Stinting reinforces the deck surface of the head in spots where head gaskets tend to fail. It is done by milling holes in the deck surface at the weak points around the deck. Then pressing in solid aluminum rod in the holes, the rod is tig welded into the head. There are two locations per cylinder. It was MAP's recommendation, as they had successful experience with it.
|
Re: Mark's 1G Winter Projects
Simply awesome man! I love following what you do, you sir are world class! Cant wait to see this thing!
PS: Love my 2.3 that MAP built as well, very solid motor |
Re: Mark's 1G Winter Projects
Wow, never heard of stinting before. Very interesting.
|
Re: Mark's 1G Winter Projects
So the welded plugs essentially are filling in gaps caused by the water jacket to reinforce the deck surface? Very interesting!
|
Re: Mark's 1G Winter Projects
Quote:
I'm getting very close to starting it up now. I called DSS and they said my axles would be done next week. Its all coming together for this racing season! |
Re: Mark's 1G Winter Projects
It's alive! Started it yesterday, all is good. It fired right up. 0 issues! I got the custom axles back too. Tomorrow it goes in for an alignment.
http://i412.photobucket.com/albums/p...5_201831_1.jpg |
Re: Mark's 1G Winter Projects
Love it!!
|
Re: Mark's 1G Winter Projects
That exhaust looks massive!
|
Re: Mark's 1G Winter Projects
Quote:
O2 sensors read differently pre-turbo because of exhaust pressure right? They are designed to be on N/A or post-turbo pressures. Does the AEM setup adjust for this with an exhaust pressure sensor? From your post it sounds like it does, I was just curious. I'd like to know what adjustments have to be made due to pressure. This could be quite handy on a single turbo system on dual banks, like a boxer or v6/v8 engine where you normally have to read the AFR post turbo, when one bank's exhaust travel is much longer than the other. |
Re: Mark's 1G Winter Projects
Quote:
No worries on bringing an old post up. Yes you’re correct, due to the pressure in the exhaust, pre turbo, the wideband O2 readings are not valid. The exhaust gas pressure transducer will allow for a calculation to be made to compensate. The pressure transducer input and algorithm processing is built into AEM 4 channel wideband module. I’m not sure of the algorithm/calibration curve of the AFR vs pressure. This is a great feature; I mainly use it to determine health of each cylinder. The combined AFR post turbo can only detect major differences. I can detect a slightly clogged injector or a torn insulator with the per cylinder wideband. I detected a torn insulator, one cylinder was off by over a half point of AFR but the feedback error on my post turbo 02 sensor showed a 2% change. You can explain away a 2% difference day to day. However, a half point on one cylinder difference is significant and made me investigate the issue further. Update on the car: I tried to dyno the car last week, my clutch slipped and we initially thought it was tire spin. This was in 3rd gear. So we tried 3rd gear again same thing. It hit the ignition rev limiter when the spin happened. Then still thinking it was tire spin we tried 4th gear. It was not tire spin and it was my clutch slipping, it was like an on/off threshold. Once the clutch started to slip the RPM shot up extremely fast and banged off the rev limiter and hit fuel cut at 9600RPM. It hurt the motor. I have coolant in cylinder #1. I don’t know the extent of the damage at this time. It’s disturbing since it was not pushing coolant, but burning it. I’ll be working as fast as possible to salvage the race season. Not good news. |
Re: Mark's 1G Winter Projects
Dude, sorry to hear, that sucks. Let's hope it's something simple and not hard parts.
|
Re: Mark's 1G Winter Projects
Ugh, do not like.
|
Re: Mark's 1G Winter Projects
^Same...the car looked so perfect when I saw it last, shame it is having issues.
Hopefully you get it fixed up bud, good luck. |
Re: Mark's 1G Winter Projects
Fuck :/
|
Re: Mark's 1G Winter Projects
We are in a similar boat. Do the work you do Mark!
|
Re: Mark's 1G Winter Projects
Yep, doing work!
I pulled the engine and the transmission out last weekend while it rained. I pulled the head off and don't visually see any damage to the short block and cylinder head. I measured the pistons TDC and they are the same, so no bent rods! I'm going to have the cylinder pressure tested. I sent out the clutch to Tilton Tuesday, I spoke with an engineer and he confirmed that it will have a 2-3 week turnaround. I need to play the project manager game to make sure Tilton service timing lives up to their expectations they set with me. If this all comes through I will be at the MAP event in June!!!! |
Re: Mark's 1G Winter Projects
^w00t! It'd be cool to see it in action at proving grounds
|
Re: Mark's 1G Winter Projects
Sorry to hear about this. Good luck I hope to see you at BIR.
|
Re: Mark's 1G Winter Projects
Update: Map built a new cylinder head testing jig. It Help detect a crack in the egr passage on cylinder #4 . The head is on its way to being fixed. This is good news, now I know where the coolant was coming from. I'm very happy that MAP is continues to build capabilities to delight customers like me! The clutch will be here in time to toss in the car with only a 250 dollar rebuild charge. My pressure plate lost its spring force when I over heated the clutch at the track.
A lot of work to be done next week! But I will be at pg2015.1 |
Re: Mark's 1G Winter Projects
Love it, keep the updates coming
|
Re: Mark's 1G Winter Projects
Sounds like some good progress! Keep it up.
|
| All times are GMT -5. The time now is 08:39 PM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.