986 Forum - The Community for Porsche Boxster & Cayman Owners
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986 Forum - The Community for Porsche Boxster & Cayman Owners (http://986forum.com/forums/)
-   Performance and Technical Chat (http://986forum.com/forums/performance-technical-chat/)
-   -   Rebuilt engine options? (http://986forum.com/forums/performance-technical-chat/79125-rebuilt-engine-options.html)

Homeoboxter 12-05-2020 12:58 PM
Quote:
Originally Posted by Robert986 (Post 627455)
Not to hijack the original thread but since itīs being discussed..

How hard is it really.. to rebuild a M96 on your own? I have rebuilt one engine and fixed and serviced a lot of others, but never opened up a Porsche engine, certainly not the M96. Sometimes it sound like it really is rocket science and you need to pay a super premium to get it rebuilt.

I have a very vague fantasy about one day rebuilding a M96 myself with the specs and improvements I want..

Can it be done by a "normal" car-guy just taking it slow an paying attention to details? :)
Essentially it`s similar to any other engine, not rocket science. Of course, it`s more complicated than, say, an in-line four due to the flat arrangement, so you need more special tools for a rebuild and there is a number of steps that are not plausable. What is really annoying though is that there is no repair manual available, except for the used ones for over a $1000. But you can actually collect all the information needed from the web, it`s time consuming though.

mikefocke 12-05-2020 03:30 PM
https://sites.google.com/site/mikefocke2/listsofsources

FredinVa 12-05-2020 07:18 PM
Quote:
Originally Posted by mikefocke (Post 627469)
Thanks Mike!!! :cheers:

BYprodriver 12-06-2020 08:48 AM
Quote:
Originally Posted by FredinVa (Post 627454)
I agree.

I am actually surprised Porsche does not sell crate engines, given the number of cars that need them.

If my Corvette motor dies, I can go to Chevy:

https://www.chevrolet.com/performance-parts/crate-engines/ls/ls3

If my Fox Body Mustang dies, I can go to Ford:

https://performanceparts.ford.com/engines/#302


It seems like Porsche would see the market for crate engines. I understand there would be a price difference from Ford & Chevy, but the skill level difference between pulling an engine and building an engine is big enough to warrant the market for crate engines IMHO.

The Ford "Fox" body is very flimsy, I worked for Steve Saleen in 1993 & he always said,"Brace it before you Race it, and we made,sold & installed all the parts to do that.

Qingdao 12-06-2020 03:30 PM
Quote:
Originally Posted by FredinVa (Post 627454)
If my Corvette motor dies, I can go to Chevy:

https://www.chevrolet.com/performance-parts/crate-engines/ls/ls3....
If your .................. (fill in the blank)................ motor dies you can go Chevy.


LS Swap the world. LOL

Quadcammer 12-07-2020 05:18 AM
Quote:
Originally Posted by Robert986 (Post 627455)
Not to hijack the original thread but since itīs being discussed..

How hard is it really.. to rebuild a M96 on your own? I have rebuilt one engine and fixed and serviced a lot of others, but never opened up a Porsche engine, certainly not the M96. Sometimes it sound like it really is rocket science and you need to pay a super premium to get it rebuilt.

I have a very vague fantasy about one day rebuilding a M96 myself with the specs and improvements I want..

Can it be done by a "normal" car-guy just taking it slow an paying attention to details? :)
I built an m97 for my friends race car. Few steps which you have to sit and think about and the wrist pin clip took us 2 tries...yes you have to split case again, but overall not too bad at all. I have rebuilt a few engines as well but not an expert

jsceash 12-07-2020 05:19 AM
Quote:
Originally Posted by Homeoboxter (Post 627461)
Essentially it`s similar to any other engine, not rocket science. Of course, it`s more complicated than, say, an in-line four due to the flat arrangement, so you need more special tools for a rebuild and there is a number of steps that are not plausable. What is really annoying though is that there is no repair manual available, except for the used ones for over a $1000. But you can actually collect all the information needed from the web, it`s time consuming though.
I have a pdf shop manual of the boxster to 2004 but really the manual does not cover 2003-04 it stops at 2002.
I also got on the internet the 2005 -2008 shop manual. this covers engine changes on the 2003 -2007 but not the 2008
If messaged I could email them.

jsceash 12-07-2020 05:33 AM
I've built 2, 2004 motors the shop manuals mentioned do the repairs/rebuild justice. 2 tool kits are required pin kit, and timing kit, torque wrench to 7nm and angel gauge. parts and tool with LN block mod could be done for $10K. improved for another 2-5K. the one upgrade is carrillo rods, these are a must if you accidently over rev.

I've seen several ford, Chevy, and Audi hack jobs all require body chopping and weld reconstruction. I was not impressed.

Qingdao 12-07-2020 08:42 AM
Quote:
Originally Posted by jsceash (Post 627540)
I've seen several ford, Chevy, and Audi hack jobs all require body chopping and weld reconstruction. I was not impressed.
Meh, I'll take a hack job over rebuilding an engine every 150 000 miles. :D

I'm not too impressed with Porsche's engineering of the water cooled H6. I mean Subaru does a great job with power to boot*; what stopped Porsche from following Subaru's lead.


*I will say that there is an issue with head gaskets. LOL

jsceash 12-07-2020 09:10 AM
Quote:
Originally Posted by 78F350 (Post 627357)
If you are looking at a lower budget and consider a used engine there are two vendors on eBay that I would feel comfortable buying an engine from:
In general I would not trust an eBay Boxster engine, but I have always been impressed with the quality and service from these two sellers.
I've done a lot of business with Quality P parts. transmission , trans shafts, bearing supports, some very nice low mileage heads etc. Great prices, good to great parts, fast shipping, never a issue.

maytag 12-07-2020 09:53 AM
Quote:
Originally Posted by jsceash (Post 627549)
I've done a lot of business with Quality P parts. transmission , trans shafts, bearing supports, some very nice low mileage heads etc. Great prices, good to great parts, fast shipping, never a issue.
While I agree with your sentiment that I'm unimpressed by Porsche's design, anyone who's ever owned an EJ motor (the Subaru) knows of its failure-prone nature as well. Head gasket and the propensity to catastrophically overheat being among the common culprits, in my own experience. :rolleyes:

flmont 12-07-2020 03:25 PM
I have a EG33 from a 1992 SVX Subaru,.and it's a 4 cam engine,.and they use gears on the ends of the cam's and a belt to tie it all together and its a NON interference engine that produces 230 HP and 225 Lb ft of Torque ,.with a 7 main case and it is said to be bullet proof,.?..Its going into a 914 very soon !

maytag 12-07-2020 03:33 PM
Quote:
Originally Posted by flmont (Post 627564)
I have a EG33 from a 1992 SVX Subaru,.and it's a 4 cam engine,.and they use gears on the ends of the cam's and a belt to tie it all together and its a NON interference engine that produces 230 HP and 225 Lb ft of Torque ,.with a 7 main case and it is said to be bullet proof,.?..Its going into a 914 very soon !
hmmmm..... YUMMY.

Qingdao 12-07-2020 06:06 PM
Quote:
Originally Posted by flmont (Post 627564)
I have a EG33 from a 1992 SVX Subaru,.and it's a 4 cam engine,.and they use gears on the ends of the cam's and a belt to tie it all together and its a NON interference engine that produces 230 HP and 225 Lb ft of Torque ,.with a 7 main case and it is said to be bullet proof,.?..Its going into a 914 very soon !
What trans are you going with? I heard the 914 transmissions are going scarce (just hear say).

flmont 12-07-2020 08:19 PM
901 with a tall H gear..

Jake Raby 12-23-2020 08:40 AM
Quote:
Originally Posted by flmont (Post 627422)
.to me volume is the money maker.
And the headache maker...
and the business killer..

These engines can't be mass produced. 100% of the efforts that have been made to do so, have failed. They will continue to do so.
You either give the engine the time it requires, and spend the money to do so, or you do the job again.

flmont 12-27-2020 06:59 PM
Yea I can understand that,.You would think the factory would want them as good as possible when they built them,..But that sure turned out a little diffrent than intended,.and yes every engine has diffrent issues aswell.


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