Dinan Stroker Reliability or Other Stroker Recommendations?

IanMan · 04-30-2023, 10:37 AM

Good day, all. I had some questions regarding Dinan S65 reliability. I've seen a few members have had them over the years, but I mean no offense when I say that the members I've seen with them seem like the type of people only to take their cars out on the weekend and baby them. Are there any members that can give a statement on long term reliability or reliability of any other stroker builds?

Over in the S85 community, Dinan does not have the best reputation, as there were a lot of engine failures in the beginning and it appears as though Dinan didn't properly know how to bore the alusil which led to premature engine failures. On top of this issue, a handful of people said Dinan refused to warranty the failures. Not inspiring confidence.

Curious to see what people have to say.

2008M36MT · 04-30-2023, 12:24 PM

On top of all of that you’ll spend $35K for 50 hp if you go Dinan. Just get Harrop.

IanMan · 04-30-2023, 12:28 PM

Quote:

Originally Posted by 2008M36MT

On top of all of that you’ll spend $35K for 50 hp if you go Dinan. Just get Harrop.

I didn't post a thread to ask about superchargers.

2008M36MT · 04-30-2023, 12:39 PM

Quote:

Originally Posted by IanMan

I didn't post a thread to ask about superchargers.

On top of all that you’ll spend $35K for 50 hp if you go Dinan.

rjsiciliano · 04-30-2023, 07:08 PM

As much as I lol’d at the answers in this thread OP did not ask about blowers. Yes $35k is a lot for 50hp but maybe someone wants to stay N/A

Soden82 · 04-30-2023, 07:35 PM

OP have you checked out other companies offerings? (VAC, Lang Racing?)

pbonsalb · 04-30-2023, 08:20 PM

And Carbahn.

DRLane · 04-30-2023, 08:45 PM

The implication that the only strokers are in cars that are babied is likely offensive and doesn’t inspire a “help me” tone. So there’s that. Secondly those with direct experience are probably tired of answering the same question. Use the search.

There are strokers in plenty of track oriented cars and or pure track machines. Yes they come with either additional maintenance and or a gamble on longevity if you’re not going to follow frequent rebuilds.

Good luck, let us know where you land!

IanMan · 04-30-2023, 11:29 PM

Quote:

Originally Posted by pbonsalb

And Carbahn.

My apologies. Yes. I keep forgetting the name change.

Quote:

Originally Posted by DRLane

The implication that the only strokers are in cars that are babied is likely offensive and doesn’t inspire a “help me” tone.

Please show me one individual on here that drives the s*** out of their stroker motor daily and has publicly posted it-as well as posted something of a review about the long term reliability (40k+ miles), and I will Venmo you $50. You can't, because nobody on here has. I'm not begging for help either, merely inferring that the majority of people with stroker motors I've seen have installed them and not placed mileage on them or driven them as hard as a true enthusiast would have in their car(s). I have plenty of friends with Lamborghinis and Ferraris that never see over 4,500 RPM. Also, I don't know about you, but when I have something I'm proud of and people are asking questions about it, I'm more than happy to give information.

Quote:

Originally Posted by DRLane

So there’s that. Secondly those with direct experience are probably tired of answering the same question. Use the search.

I have used the search many, many times. I have been a member of this forum a lot longer than this profile shows. I have researched the profiles and the threads posted from the majority of stroker owners and I have not found enough information to draw solid conclusions as far as reliability. I have however seen countless threads on this topic and others mentioning build quality issues or engine failure. The fact that you would comment for me to use the search on this topic means that you have zero subject matter knowledge in regards to what I asked.

Quote:

Originally Posted by DRLane

There are strokers in plenty of track oriented cars and or pure track machines. Yes they come with either additional maintenance and or a gamble on longevity if you’re not going to follow frequent rebuilds.

Good luck, let us know where you land!

Of course a track car will have additional maintenance no matter what type of engine it is running. A well built stroker motor should not require any additional maintenance, nor a gamble of longevity if built properly. People like myself know this because the failure points of the normal S65 that should addressed if you're doing a full engine rebuild, i.e.: Increased crankshaft/bearing clearance for proper oil passageways; ensuring that the Alusil honing process is done properly, etc. etc. etc.

Quote:

Originally Posted by Soden82

OP have you checked out other companies offerings? (VAC, Lang Racing?)

I have asked for quotes from Lang which they were more than happy to provide for my 2010 M5, however I have only seen one thread as far as their S85 with no follow up, and I have never seen a post regarding an S65 build from them.

As far as VAC, I have seen multiple threads/comments in the past of engine failure.

amrazM · 05-01-2023, 05:37 AM

e-megatronic in bridgeport ct can also build you an engine, it wouldnt hurt to reach out and get an estimate and some info from him.

pbonsalb · 05-01-2023, 06:24 AM

I was pretty active here for about 10 years and what I read would cause me to share IanMan’s reservations about stroker motors that will be put to the test (driven hard or tracked over tens of thousands of miles).

DRLane · 05-01-2023, 08:24 AM

Quote:

Originally Posted by IanMan

I have asked for quotes from Lang which they were more than happy to provide for my 2010 M5, however I have only seen one thread as far as their S85 with no follow up, and I have never seen a post regarding an S65 build from them.

As far as VAC, I have seen multiple threads/comments in the past of engine failure.

You seem like a joy, I’m sure folks will be thrilled to assist with your “unique” inquiry and delight in your contributions and perspective. Cheers!

IanMan · 05-01-2023, 09:25 AM

Quote:

Originally Posted by DRLane

You seem like a joy, I’m sure folks will be thrilled to assist with your “unique” inquiry and delight in your contributions and perspective. Cheers!

Thanks! Now I have a new signature.

Z K · 05-01-2023, 10:56 AM

Leave it stock and the engine is bulletproof. There are many examples of stock engines running forever while abused on track. Why mess with a good thing?

If going fast on track is what you want, you'll get much better lap times with other modifications than adding more power.

04-30-2023, 12:24 PM	#2
2008M36MT Private First Class 590 Rep 118 Posts Drives: M3 Join Date: Sep 2022 Location: Best Coast iTrader: (0)	On top of all of that you’ll spend $35K for 50 hp if you go Dinan. Just get Harrop.
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04-30-2023, 07:08 PM	#5
rjsiciliano Second Lieutenant 159 Rep 270 Posts Drives: 2013 MW e92 M3 ZCP Join Date: Mar 2022 Location: Orlando, Florida iTrader: (1)	As much as I lol’d at the answers in this thread OP did not ask about blowers. Yes $35k is a lot for 50hp but maybe someone wants to stay N/A
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04-30-2023, 07:35 PM	#6
Soden82 Major 479 Rep 1,196 Posts Drives: 2011 BMW M3 Join Date: Jun 2017 Location: Boston iTrader: (1) Garage List 2011 BMW M3 [0.00]	OP have you checked out other companies offerings? (VAC, Lang Racing?) __________________ 2009 BMW 335i 6MT big single (eventually) For now... MHD tuned VRSF Race IC DCI ATM exhaust
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04-30-2023, 08:20 PM	#7
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	And Carbahn.
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04-30-2023, 08:45 PM	#8
DRLane Brigadier General 3989 Rep 3,409 Posts Drives: E92 M3 Join Date: Oct 2018 Location: Colorado iTrader: (21) Garage List 2008 m3 [6.63]	The implication that the only strokers are in cars that are babied is likely offensive and doesn’t inspire a “help me” tone. So there’s that. Secondly those with direct experience are probably tired of answering the same question. Use the search. There are strokers in plenty of track oriented cars and or pure track machines. Yes they come with either additional maintenance and or a gamble on longevity if you’re not going to follow frequent rebuilds. Good luck, let us know where you land! __________________ Not a Doctor, those are just my initials.
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05-01-2023, 05:37 AM	#10
amrazM mTekMods 2142 Rep 2,902 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	e-megatronic in bridgeport ct can also build you an engine, it wouldnt hurt to reach out and get an estimate and some info from him. __________________ 2011 Frozen Black/Fox Red E90 M3 650+WHP G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5
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05-01-2023, 06:24 AM	#11
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I was pretty active here for about 10 years and what I read would cause me to share IanMan’s reservations about stroker motors that will be put to the test (driven hard or tracked over tens of thousands of miles).
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05-01-2023, 10:56 AM	#14
Z K Major General 1889 Rep 5,506 Posts Drives: E90 M3, G20 M340i Join Date: Jul 2011 Location: San Francisco iTrader: (3)	Leave it stock and the engine is bulletproof. There are many examples of stock engines running forever while abused on track. Why mess with a good thing? If going fast on track is what you want, you'll get much better lap times with other modifications than adding more power. __________________ Auto Detailing Enthusiast!
	Appreciate 2 IanMan384.00 --Aramis--124.00 Quote