Re: Lucky #13...Back in the saddle....92 rt/tt
 

There are some guys using the 6g74 with 6g75 crank and 6g75 mivec heads.

The worry is that the 6g75 service limit for overbore is less than the 6g74 so the block maybe to thin for a serious overbore. A 6g75 crank drops into the 74 block and with an offset piston pin gets it around a 3.8L engine with the block thickness of the 74.

The 6g75 MIVEC SOHC heads seriously outflow the 6g72/6g74 heads (virtually the same in most models), but getting it to fit under the hood on a 6g74 block is a pita.

However, the 6g75 heads on a 6g72 block with an offset ground 6g74 crank should fit easier (12mm shorter). I don't think anyone has done that, but I know if plenty of people that do the 6g74 crank in the 72 block with an offset grind and custom pistons/rods, gets it to a 3.4-3.7L with decent piston speeds.


Just comes down to how much you want to spend. I am leaning towards just a good old 3.1 (smallish overbore on a 4-bolt factory block), unless I come into a money tree ,then I'll do the offset ground 6g74 crank for a "sleeper" 3.5L.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

I have a 6g75 that had the timing belt break on it if you are interested in parts.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

whatever is cheap and will hold 100more whp/tq you want to make gets my vote, also strokers for street cars!

Re: Lucky #13...Back in the saddle....92 rt/tt
 

I just realized I didn't post the "progress" charts...

The 9b's are probably cores now which sucks because we spiked over 26.5psi out of them! :bengals:(hit fuel cut at 26 psi @3500 or so). Still only 14psi or so at redline, but had a good area under the curve.
22psi to 14psi = 348hp/422tq
25.8psi to 14psi = 368hp/480tq
24.5psi to 14psi = 345hp/455tq

http://forums.mn3s.org/download/file.php?id=712
Green pull was "close enough" at 21psi spike-14 to redline. Wanted to leave some on the table. Then we decided to turn it up to an all boost setting (ramp it up fast), which is the blue graph. Timing is VERY conservative on that pull under higher boost, as we had not ventured that high yet in the map.

Car started to misfire at 6100rpm, so we shut down. The power dip wasn't to concerning as we had pulled some timing for safety and figured it would be down on power, the misfire was a bit concerning, hence the shutdown. Checked the car over and it seemed okay, so we figured the misfire was from the lack of timing we added back the timing that worked, see the red graph.

When the car nosed off again up top, something was not right obviously.

We didn't hear much noise (sounded like Throw-out bearing chatter) so did another quick pull starting at 3000, 4300rpm hits, BOOM, smoke screen, car noses over, clutch in, coast to the side of the road. car is still running but sounds like a bag of marbles in a washing machine, shut it down and coast to the side of the road.


My analysis:
Odds are the damage was done @5100rpm on the red pull when it nosed over. Technically it could have actually happened around 5900rpm on the pull before, but I just can't believe that the car made one last go at it and made similar if not more power on the red pull (until it nosed off).

Spun the bearing there and dropped out the cylinder (red graph), next pull was just icing on the death cake. Should have just called it when we heard the chatter instead of assuming it was the loose TOB (weak slave cylinder), 155,800 miles on it with an unknown history=shit happens.

I will have to tear this one down to see what happened. E-85 doesn't show knock on the AEM really. However this motor was quieter from a knock noise standpoint compared to most 3/s I see (pump or E-85, under 1V). When the motor let go, it hit 4V. End of the red pull it was 2V or so....I really really don't think it was detonating, but the motor will tell the story.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Drained the oil today, first thing out was about a 1/2-1 gallon of coolant...that isn't good.

Poked around in the oil pan holes, found a chunk of rod, looked at the rear hole (Now that it is lifted up), GIANT hole in the block.

I don't really give a rip about the 2 bolt shortblock, just hope the heads are fine as those can get spendy.

Ordered a forged crank that should only need a micropolish and have a line on a 4 bolt block.

Also have a line on forged rods, waiting on a piston quote, and found a TD05 14B kit (7cm housings).

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Forged rods ordered with ARP2000 fasteners.

Old school Titan 14b kit ordered. Features twin 14b's with Forced Performance 7cm housings (ported), Titan bending "old school" manifolds and 02 housings, and a 4" outlet downpipe. (bit overkill but eh, I'll run 4" to twin 3" catback mufflers).

6g72 shortblock core
6g72 balance/polish crank
6g72 oil pan
6g72 cp pistons
OEM rebuild gasket kit
oem oil pump
OEM head bolts
Oem main bolts
Oil cooler setup
ACL Bearings
machine work

is the rest of the setup, needs to be ordered/sourced. Also looking at a 4-bolt block on Sunday.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

damn dude, looks like you might have this beast back in time for PG!

You could rock SA/U with that setup!

Re: Lucky #13...Back in the saddle....92 rt/tt
 

No way in hell, hoping to get to the track before end of season. There is always the 5th annual MAP proving grounds.

I am swamped with customer work and then going on Vacation from June 8th thru June 17th, so its not happening. However John's Galant is looking like it is on progress :beer:

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Nice, yeah I know that feeling if i make it this year it will be my first racing there.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Oil pan in-route, looking at a block on Sunday if it checks out, ordering pistons.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Update:

14b kit is canceled, guy backed out on the deal and now wants more than I want to pay for them.

So we are back to 13T's (WRX Turbo's) 2 turbos have been located (well 4, picking the best deal of the 2) and already machined housings, so the car is now back to "stock appearing".

6g72 shortblock core -Purchased and arrived
6g72 balance/polish crank -purchased and arrived
6g72 Forged Rods with ARP2000 bolts -purchased and arrived
6g72 oil pan -on the way
6g72 cp pistons -haven't ordered
OEM rebuild gasket kit
oem oil pump
OEM head bolts
Oem main bolts
Oil cooler setup
ACL Bearings
machine work

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Woot! Do some junkyard diving or find one already out and ready for ya?

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Hard to find the 4 bolt forged stuff in the junkyards. Picked up a shortblock locally that was a garage paperweight and a crank that was serving the same function in Tennessee.

Rods arrived last week, need to measure block to order pistons. Then its an small overbore and some parts away (bearings/new rod bolts/seals/gaskets) from a functioning shortblock.

Plan on pulling the motor after the proving grounds, should have everything else here or damn near here by then (turbo's included). Hopefully have it up and going for early August action.


Motor should be good for 700+AWHP as is similar build to my previous motor I had in the blue stealth (short-block wise) while the turbo's....we'll try to squeeze 500 out of them, its been done before on E-85 and piggybacks with 21psi of boost.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

That's gonna be sick I remember that powerband of the 13Ts

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Good, one more person is just as far along as I am. :D

Re: Lucky #13...Back in the saddle....92 rt/tt
 

I'm shooting for track ready in August, break in/street/dyno in July, all hands on deck for John's Galant until after the proving grounds.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

And before that bundle of joy comes and the moontaxi gets parked!

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Awesome man, keep going and git r done!

Re: Lucky #13...Back in the saddle....92 rt/tt
 

we will have to plan a group trip to the track come sept./oct.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

I like it, call it the "I wanted to race this year, but instead get to race 1 time before winter" event.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

:c9598f74:

Update:

Car has been sitting essentially since May. Except for pulling a few parts to help locals diagnose issues on their cars it hasn't been touched. Still awaiting to pull the trigger on .020" overbore pistons through MAP, hope my quote from a few months ago is still good.

Once pistons are ordered machine work on the block can begin with assembly. Plan hasn't changed much, Forged shortblock good for 700awhp backing up a set of newish 13t's (WRX Turbo's). The record for these turbos on E-85 is 501awhp on a mustang dyno with piggybacks, I'd like to break that, but the car will make what it makes. I figure around 400 on pump gas is attainable with the setup and 450+ on E-85 should make a stout street car.

Bought a boat this summer and the wife a new car last week has put this car on the backburner. Plus with us house shopping it is even lower priority, but I do fully intend on having it on the street next spring. I'd like to rebuild the transmission, add a brace, and swap in shorter gears ala what Ryan did with his Green car, but time will tell.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Buying a boat this summer? Fall is upon us my friend, but I will put in a shameless plug because I'm selling a boat. :D

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Wheres the boat project thread? :)

Re: Lucky #13...Back in the saddle....92 rt/tt
 

^I thought this was the boat project thread? Project Land Yacht?

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Bought a boat, my bad.

Maybe once I've made more progress on it.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Well bumping this one up from the dead as I am starting to make headway on the project. Scrapped the DIY built motor and decided to just source on from Pampena Motorsports. Got one of their stage three 4 bolt shortblocks and it should be here in roughly two weeks.
http://store.pampenamotorsports.com/...ackages-5.html

As my motor was trashed, no core was available.

Finished sheetrocking the garage so the Stealth is finally inside back in its new home. Total days outside in the past 13 months = 26.

I think with a little luck I can have it at PG2 this year. If not I'll get it running right before winter so I can sit and look at it all winter.

Pictures to come once the motor shows up. Also got some HD wastegate springs for the future TD04's. Maybe I can pull the boat anchor out of the chassis in a few weeks once my fence is up at the new house (priorities get in the way of car builds sometimes!).

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Nice.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Sweet. I couldn't make PG11 because of work, I'm mostly ready for the SO and PG2, just have to do lots of suspension work and general clean up. It's nice having a nice running car so early in the year. :D

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Progress:
Walbro E85 fuel pump arrived today with install kit. I needed a bit more fuel than the DW301 offered, so I upgraded.
Stage 3 "1000hp" shortblock shipped last Friday I was told

I may get the old motor out this week if this heat goes away. Room in garage for new motor, will take pictures when it shows up.

If heads are good = "monster TD04's"
If heads are not good = "reasonable TD04's"

Still should scoot pretty well on E-85.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

At least you were clear on teh turbos.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

LOL.

I'd like to put DR750's on there, something that has done 600awhp on 93 octane, but they are mucho bucks and I can't justify ordering them until everything else checks out.

There are some billet 19t's that have hit the market with good reviews, they are substantial cheaper ($1000+ cheaper) and those are tracking to be around 500-550awhp on 93 octane. Granted you turn them both up on E-85 and you hit that "enough power" mark pretty quickly.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Sounds like you are gunning for a minimum of 600whp, question is DJ or DD whp?

2nd question because we are getting older and there are a growing number of skirts, will this see street time? :uhoh: (my guess is yes)

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Most of the 3/s guys use dynojets, so those are the results I am quoting. In the end it is all about a fun street car, Ryan's stealth "only" made 440awhp on a dynojet and that car was very quick.
Street time: To and from work, yes indeed.
Cruises, yes.
"Downtown" probably not but for a few times a year tops as that scene has mostly died it appears; or I am so far removed that I have no clue anymore.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Oh the downtown is still going. You just have to get in with the right crowd.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

lol, its a lot less than it used to be. But there is still some happenings, best way is to organize it rather than just get out imo.

Well glad to see this coming together, be good to have more people to roll with.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Stage 3 shortblock is sitting on the workbench. I couldn't decide on turbo's, so I bought this instead:

Wife's GTI is in the background. I've always wanted a sport bike and figured I wouldn't have time to finish the stealth this fall, so why not have some fun and work on it over the winter?

:)

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Nice, you can still come out and do some rolls.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Previous owner went 12.05 or something like that around 116? Its fairly quick for an "old outdated slow 600"

I think pro riders get 11.21 @ 123 mph out of them. This one has a stage 1 jet kit, slip on, and is -1 in the front, so should have a bit more acceleration than stock.

Cheaper than a set of turbo's ;)

Re: Lucky #13...Back in the saddle....92 rt/tt
 

I don't want to know what kind of turbos you were trying to get.

Re: Lucky #13...Back in the saddle....92 rt/tt
 

Some billet TD04's, you have to remember I am buying stuff in a less supported platform with fewer options, and I need to buy a pair of turbo's ;)