Rajicase's First Turbo Build, Ballin' On A (Nonexistent) Budget

[tyr283]

So blackpearlz said he did 750whp out of the 369 at 21psi creeping to 29psi..

Im driving but i read the 69 flows 95 and the s366 flows 87lb/min..

Be curious what you dyno at 21psi buddy..


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I thought he got the S366SXE? Cause the sxe flows 95 lb/min like the regular S369

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[vollosso]

He does have the sxe. I googled 369sxe just now to see the flow rating. It could be wrong as i didnt verify it at the stop light


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[tyr283]

According to full race it flows 94 lb/min

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[rajicase]

I do have the s366sxe. I would love to dyno it with you zack, unfortunately looks like it's gonna be a while. I was hoping the pistons were okay.

Really bummed out about that , don't know what my best option is at this point.

[vollosso]

Yeah i know buddy. You did confirm the limit of factory rods in style though.

The good news is you now are forced to buy proper pistons and get rid of the spacer.


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[cragg56]

Am I the only one that would recommend taking that block to a machine shop? I keep hearing everyone say ball hone and I realize you're trying to do everything on the cheap, but all those bent rods and especially the damage to the one piston would leave me nervous that something also happened to the block. Just my thoughts. Sorry for your loss

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[someguy2800]

At 3:1 pressure ratio and 60% efficiency a 366sxe is about 85 lbs, a 369sxe is about 95. There is no regular 369, the biggest cast wheel s300 is an s366.

[wazzu70]

Guys help.
I can't figure out why it was knocking.

Attachment 597530

Whoa. Variable compression M5x. Innovative!

You got the compression drop figured out...now just need to pump it back up!!

[somebody5788]

I'm still shocked that at that power the rods were only bent and not broken in half and through the side of the engine haha. An LS1 can barely handle 600 reliably and they keep dogging on me that their engine is so much better and that I'm wasting my time.

[chikinhed]

The only reason an LS is good, once you replace all of the internals, is because it's aluminum and its displacement is huge in comparison.

[somebody5788]

The only reason an LS is good, once you replace all of the internals, is because it's aluminum and its displacement is huge in comparison.

I have a 5.3 that one day I'll be putting into something just not a BMW. That engine is superior to the LS1 though.... I've seen at least 2 of them do 40+ dyno pulls at 1200 hp on stock components....

[Mklock]

Not quite true I've seen a bone stock LQ4 lay down almost 1100whp, drove it home normally. That is the "truck" motor but still LS based.

[tyr283]

Not to get off topic here but there are definitely a ton more reasons the LS is good. As for the Ls1 only making XXX power reliably it isn't really as well tried on stock blocks as it seems to be with other cars, because it's way easier to sell the pricey aluminum block, buy a truck block for $300 and make 800+ whp on stock block

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[GG///M3]

What brand of pistons at they? You will need the build sheet for them if you want only one or two made. If they are CP then you are looking at a ten week lead time unless you want to pay a big buck 'I want it now' surcharge.

Next time I buy pistons I'm almost tempted to buy 8, just in case.

Nope the next time you install Pistons meant for boost you also install proper rods. Sadnesses


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[someguy2800]

A stock 4.8 or 5.3 or even iron 6.0 will make more hp per liter than a stock s52 any day of the week.

[somebody5788]

A stock 4.8 or 5.3 or even iron 6.0 will make more hp per liter than a stock s52 any day of the week.

I'm talking the aluminum car engines though, everyone around here has those and thinks they are better then every other engine ever made.

[rajicase]

So I think my game plan is this;
Stone hone the number 6 cylinder until the bore looks new.
Bore gauge and mic the bore in several different places. Confirm it's in spec to run 86.5 JE pistons.
Assuming it is, I'll get some JE pistons and stone hone and ball hone all 6 cylinders and throw the new pistons and eagle rods in.

[Mklock]

I want one of your rods for wall art, preferably the most f***** one, will pay shipping.

[rajicase]

I want one of your rods for wall art, preferably the most f***** one, will pay shipping.

That rod is going next to my piston which has a hole in it due to a mis shift lol.

[someguy2800]

I'm talking the aluminum car engines though, everyone around here has those and thinks they are better then every other engine ever made.

The aluminum engines make decent power to but not like the iron motors. I know someone locally that's been running 9.5's in a bracket race car for two years with a stock 5.7. If the goal is to make the most power with the least money with light weight that will fit in almost any chassis then a turbo LS is the greatest motor ever built ever ever ever ever by a very wide margin.

[PEI330Ci]

Would you be comfortable with posting your timing map?

...just to give an idea of where you were at for others running stock rods. (Like me!)

Sorry about the carnage, but it sounds like it was one heck of a ride until it let go.

[dburt86]

Good work on the rods!!!

Sucks about the piston.

[rajicase]

Well hey there , ready for 800 now.

ForumRunner_20170414_111133.jpg

Oh yeah, 350-400whp will satisfy me forever.
F****** b*******

[Butters Stoch]

Well hey there , ready for 800 now.

<img src="https://www.bimmerforums.com/forum/attachment.php?attachmentid=597757"/>

Oh yeah, 350-400whp will satisfy me forever.
F****** b*******

Good order a driveshaft, and 210mm diff cause those are going to twist up next. Unless you have no traction. Well, then again if you can't put down the power, you don't have the power. Vicious cycle huh

[someguy2800]

Good order a driveshaft, and 210mm diff cause those are going to twist up next. Unless you have no traction. Well, then again if you can't put down the power, you don't have the power. Vicious cycle huh

Mabey we should all do complete C6 corvette conversions?