Turbo 3.8L Cayman Engine Build (Porsche M96) - Part 8

[@KUREOUSBUM]

Wow, stumbled across this going down a KZbin Cayman rabbit hole. Watched from disassembly through this one...so cool. Nice work, enjoyed it a lot.

[@BoostBrothersGarage]

Thanks Craig! Make sure to stick around, it’s going to be a lot of fun when it’s finished!

[@paulhoffman1481]

Glad you guys got it done! That build is going to be sick! Those flat sixes sound awesome too! Congrats!

[@BoostBrothersGarage]

Thanks Paul!

[@paulhoffman1481]

@@BoostBrothersGarage Found an hx35 turbo im considering buying but need a little info, To run 400whp, which is about 470hp crank at 7000rpm, it takes about 53pounds/minute flow from the turbo if my calculations are correct which is well in the hx35 range as the model im looking at maxes at 60pounds/minute flow. If i upgrade the springs on the 07k the redline goes up to 8500 rpm. Does this mean that the max output would becomes 485whp? Is max reliable engine torque rpm sensitive? If not then the turbo flow would need to be 66pounds/minute which is too high for the hx35 but works with an hx40 pro. Which turbo should i choose based on 8500rpm if that is a reliable redline with springs and maybe rods and a cam if needed. Seems like the hx40 pro would have just enough flow unless my calculations are wildly off lol. What do you think? Thanks

[@BoostBrothersGarage]

Your math isn’t incorrect, but it’s not as black and white as you state. First off, horsepower is a fake number, it’s torque x rpm / 5252. So, the more torque you have at the higher rpm the more horsepower you will have. Based on my calcs the HX35 will have no problem making 400 wheel, especially if you are doing a cam. There are guys out there that have made 600 plus with an HX35. They love high boost and will have great response on this engine. However, if you are concerned and have the budget you could run the Garrett G25-660 like Alan. It was spec’d by Garrett engineers for the 07K and is capable of 660 crank HP with great response. The HX35 was my budget alternative that I believe will perform pretty similarly although well a touch slower response

[@paulhoffman1481]

@@BoostBrothersGarage I think we had a missunderstanding. 400whp is roughly equal to 460 crank hp which can translate to 345 foot pounds of torque at 7000rpm. Could the engine make 345 foot pounds of torque all the way to 8500 rpm stock with the exception of the springs and maybe a cam or would the engine implode or something lol

[@BoostBrothersGarage]

Haha, I gotcha. We honestly don’t know yet. Everything I’ve read just says 400 wheel is safe. I know there are people out there spinning to 8500 ok stock internals as well. We plan on doing a lot of experimenting to find the true limits, but we just don’t know yet. I think the HX35 is the right turbo unless you plan on going for serious power, like 500+ on a built short block

[@rmjmotoring]

Good stuff gents, just picked up a 987.2, 2009 model. Can't wait to see that 3.8 rip

[@BoostBrothersGarage]

Awesome, good call on the .2!

[@knieban]

Hennessy. Yes.

[@BoostBrothersGarage]

Nice! Will do!

[@ArrowheadGarage]

Crown and a splash of 7nUP! Great video Mike!

[@BoostBrothersGarage]

A classic combination!

[@IamCredit]

Building an engine in flip-flops. Fucking legend.

[@BoostBrothersGarage]

Hahahaha, how I roll!

[@DriftaholiC]

I just bought a mint 987.1 with 30k on the clock and now after catching up with this one.. am absolutely terrified to track it. Damn you! But also, Thank you!

[@BoostBrothersGarage]

Haha, sorry! Get a deep sump, keep it off the rev limiter and change oil before track event with QUALITY oil!

[@DriftaholiC]

@@BoostBrothersGarage I researched a noise and a Pandora's box of bore scoring, rod bolts, AOS issues jumped out lol. I shred on my cars, intended to drift this one at least occasionally. Cross your fingers for me!

[@edwinremudaro7953]

Great things happen when you don't give up. Great job!

[@BoostBrothersGarage]

Thanks Ed!

[@frankleonard6291]

Congratulations, thanks for sharing your up's and downs, love it.

[@BoostBrothersGarage]

Thanks frank!

[@RaccoonChrist]

I keep coming back and catching up on your videos expecting you to have blown up. People don’t care about quality content anymore unless there a hot chick in it or something making 2000hp, regardless keep it up your videos are gold.

[@BoostBrothersGarage]

Really appreciate it! I think you have to have a lambo for anyone to care these days. I thought maybe my lambo header would do it, no luck hahahahaha

[@kerryL]

Congrats!

[@BoostBrothersGarage]

Thanks!

[@budgetoutlaws9978]

Congrats on getting through this issue!!

[@BoostBrothersGarage]

Thanks!!!

[@latohawaii5292]

Thai wiskey.. many. Hello from Pattaya, Thailand.

[@BoostBrothersGarage]

Awesome!

[@Beehivefisherman]

Yes yes yes! You guys are the reason why I have my 987 and I cannot wait to see this thing back together.

[@BoostBrothersGarage]

Same here!

[@kowkes]

Good job man. Glad you are learning for us. I own a 996.2 with three m96 motor. I can't wait to see the cost of this upgrade in case I have to rebuild mine in the future. Thanks again for the content and stay safe. I hope to see you at 944 fest

[@Mnebelyuk]

Sipping on some angry orchards

[@BoostBrothersGarage]

Enjoy!

[@RebuildRex]

YES!!! Glad it worked out. Great video!

[@BoostBrothersGarage]

Thanks buddy!

[@limulus61]

I'm really looking forward to seeing this completed. I have a 2015 981 Cayman S. I can only imagine how beastly it would be with this type of engine. But, it is still under warranty and cost me too much money to chance a mod like this. FWIW, I do have Soul Performance Headers paired with the PSE.

[@BoostBrothersGarage]

I bet it sounds lovely! You should check out the Flat 6 Motorsports KZbin channel, he has videos of his 3.8 swapped 981

[@gregoryorr11]

having a cocktail after powder coating two sets of Porsche wheels today. Cant wait to get into an engine. Boost Bros. Keep it up

[@BoostBrothersGarage]

Good man!

[@wheelsone55]

Yes! Would love see some B5 action!

[@georgiadawg4946]

Great job, Mike! Good to know you referenced Jake Raby's advice on the guide tool. Light at the end of the tunnel! Oh, and love your boxer swag. ha!

[@BoostBrothersGarage]

Thanks! Should have followed Jakes instructions more closely before and saved myself some hassle!

[@Rei_n1]

Is there an update in the makimg to the 3.8 implant project or is this 6 months dead already?

[@BoostBrothersGarage]

Soon! Just been busy with other projects.

[@Rei_n1]

@@BoostBrothersGarage happy to hear it coming! Thanks for the update! Keep the great content going!

[@brianlingg5518]

Something that I didn't hear you mention but seems important regarding the circlips. When you are ready to install the circlip with the tool, are you rotating it until the tang on the clip drops into the slot before you hammer it into place? I assume you were doing that but it wasn't clear or I missed it on the last two videos. I know you said you are aligning the clip, I assume you also mean rotationally aligning the tang into the slot? Does my question make sense?

[@BoostBrothersGarage]

For this bank it is suggested that you cut the tangs off the circlip. There are just too many ways to screw it up otherwise.

[@brianlingg5518]

@@BoostBrothersGarage Ahh, that makes sense. I must have missed that. Thanks for the reply. I appreciate it. Looking forward to more of the Cayman engine build videos. I've learned so much from your series.

[@BoostBrothersGarage]

Thanks! I will be posting another one real soon.

[@Fizzo20]

Massive congrats on getting the 3.8 together! I could not put up with a flat 6 lol. VERY INTERESTED IN B5 07K VIDEOS!!! I'm a B6/VR6 guy but love innovative VW/Audi content. Have you heard of Malaka Motorsports? I made a pretty detailed video of swapping a transverse 1.8T into my B6 back in December and kinda wanna start editing the video now that I have more time; what editing software are you using? I'm more of a kush guy but I might go pop a Corona now that you mention it😂

[@BoostBrothersGarage]

Thanks! I have heard of Malaka. I would suggest using Adobe Premiere Pro but Hitfilm Express works well and is free. Hey man, no judgement here, legalize it!

[@Fizzo20]

@@BoostBrothersGarage Thanks man! I've used Premiere at work but might try Hitfilm at home first before getting Creative Suite. I'm in Canada so it's legal here! Doesn't make much of a difference though haha

[@Mark_Meisho_Thompson]

Nice to see it’s coming together now man, I know you guys have had your dramas 😄

[@BoostBrothersGarage]

For sure haha!

[@roberdman6637]

Corona beer. As of now, Lost count.

[@BoostBrothersGarage]

My man!

[@grantgrant77]

Sauvignon Blanc - unlimited

[@BoostBrothersGarage]

Ahhhh, nice!

[@StevenHasson]

Hi there! Congrats!!! - that's great news!!!! I've been inspired!!! I am technologist but wanted to learn how to rebuild a motor (in these Coronaville times we are in) - not any motor - a horizontal (truth be told I have a 07 Cayman S 36K, it so my intentions to watch your session and this H4 rebuild have my interest) - My friend, a real mechanic unlike me, did a Subaru H4 naturally-aspirated engine crate swap for one of his customers, he gave me the failed motor (I will send pics if you want - not a KZbinr!) I have removed 3 of the 4 pistons(2,3, and 4) but piston 1 - I need to remove the wrist pin first as I can not gain access to the piston rod bolts I can buy mostly what I need but I can not get access to the backside of the wrist pin to put the nut on to pull it through - what can I do, what can I buy? I am stuck please advise!!!

[@BoostBrothersGarage]

On the Cayman engine, which I believe is pretty similar, I had to split the case halves and remove the bank two half. From there I was able to remove the crank carrier and disassemble from there. Watch this video and see if it helps? kzbin.info/www/bejne/imHYdIZnj6dpjJo

[@gnrrpreacher]

Mike, I knew you'd overcome. Show rod knock. keep the vids coming. Drink more. FWIW I am #7 of a white claw 12, don't judge me I'm on a diet. Stay safe brother.

[@BoostBrothersGarage]

Hahaha, this is a judgement free zone

[@joek1302]

Can't wait to see this beast run! Do you think the soul exhaust or at least headers will still work with the set up?

[@BoostBrothersGarage]

Same here! The Soul headers will work but the whole rear section is replaced.

[@MrJustinhi]

@@BoostBrothersGarage sure soul would custom them !

[@BoostBrothersGarage]

Can’t wait to see what they do!

[@MowSow]

Congrats on finishing the engine !! I tried to search for the J gravy and the knowledge group video but came out with nothing !! I would appreciate a link or the correct spelling of the name Thanks

[@BoostBrothersGarage]

Here you go! www.theknowledgegruppe.com

[@stuntmanonvespa]

Why go for the lower compression ratio? wouldn't it be more effective (efficient) for the higher ratio? Enjoying the content and feel your pain. Can't believe you've only a small number of subscribers compared to Goons who clearly haven't an ounce of knowledge. Keep it up :)

[@BoostBrothersGarage]

Thanks! Going to lower compression ratio allows you to run more boost ok pump gas. 15 lbs of boost at 9:1 CR makes more power than 10 lbs of boost at 10:1 CR

[@brianpreblich5123]

NOT gonna lie... It's a Chardonnay... Sorry, I hope I can keep my man card...

[@BoostBrothersGarage]

I’m a red guy but I’ll let it slide! Haha

[@SoleFocus]

WHISHKEY!!!

[@BoostBrothersGarage]

There you go!

[@djambrosia]

Alcohol fueled success!

[@BoostBrothersGarage]

As is tradition around here!