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Discussion Starter #1
Hey guys

I had a few questions before I go out and just start throwing money around on an engine. I tried to search the site through here and on Google with keywords, and I only came up with a few things that didn't answer my questions. Background - I have a 1999 996 that was hit and run on, just heard from the shop its in today that basically its scrap (because it would cost way more than necessary to fix and would be better to just get another engine). Here is what I wanted to know:

Does the 998 engine bolt straight up to the 996 frame?
What about a 999?
What things would need to be changed (besides the ECU) for either to fit into the frame?
Are there pros or cons to the 998 or 999 onto the 996 frame?
Is there any other relevant information between looking at a 998 or 99 engine to throw onto the 996 frame?

Thanks guys, I really appreciate your help and knowledge base for my mechanical newbie-ness.

-Steve
 

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A great opportunity to update your bike. The Testa engine is great. The 998/999/1098 ECU needs a different wiring loom just for starters. There are great threads here by Tom Tom and others about fitting a 1098 to a 996. If I were in your shoes I would go the 1098 or a Euro spec 998s or a 999s, extra 13hp over the base. I have a Euro spec 998s and it would put a big grin on your face.:D Keep us posted.
 

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Unless the bike has a lot of personal value and you're project guy with lots of hands-on experience and aptitude and have an equipped shop its probably not worth the the money or effort to paste a different model engine into it. There is essentially no difference between the 998 and the 999 engines, both are a 998 Testretta engine. Either will essentially bolt in with a few mods but that's only have the story. Depending on the model year, 2000 and older use smaller diameter engine bolts and will need the frame drilled to accommodate bigger bolts. Bigger issue will be the throttles bodies and air box, only a 998 model bike will have any chance of fitting a 996 chassis, 999s use a completely different air box and runners. The electrics are another big issue, you'll need a newer ECU, harness, dash, fuses, ect. Next is the exhaust, basically you'll need to throw away everything but the slip-ons and start fresh. If you can find a trashed 998 with a good engine that's your best bet, otherwise if your determined to resurrect it I'd just put a replacement 996 into it, that will essentially bolt in and connect with everything on the bike.

Just my opinion..
 

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Discussion Starter #6
Thanks for your input and replies everyone. I think I will be trying to just go with a 996 back into it, unless if it doesnt work out and I find a 998 for a good price. In any case, thanks for the answers.

Steve
 

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Hold the phone - is that an SP motor? It's a MY 96 according to the head stamps. It has the shaved cylinder heads but an early crankcase - that's not a standard 916 motor. It also has dual injectors on the throttle bodies.

Goddang I wish I had the funds to bid on it... I would buy that in a heartbeat. High comp pistons, lightened internals, hot cams, close ratio gearbox.... hamunahamunah

 

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There is a 998 motor with full service history at Desmoto-sport in San Fran that was traded for $1000 in labour fees. PM me if you want the details.
 

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998 lump seems like a really good choice! Probably what I would try to look for!

Good luck
 

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Discussion Starter #11
Just sent you a PM widewalker of the 998 engine. If I could get a 998 engine, all I would have to do is read up on what I would need besides the motor to throw it in. Not too hard I guess? Haha.
 
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