what vehicle used these engines ?

[GiMLit]

Wondering what automotive applications used the same engine configurations as the 120 hp 153 CID (2.5l)
and 140 hp 181 CID (3.0l)
4cyl units in many marine applications.

 

[jimmbo]

Re: what vehicle used these engines ?

Wasn't the 153 cu in engine used in the Chev citation back in early 80s?

 

[Bondo]

Re: what vehicle used these engines ?

Nope............

These motors are Not used in automotive applications..........

 

[GiMLit]

Re: what vehicle used these engines ?

Nope............

These motors are Not used in automotive applications..........

With all no disrespect to your knowledge etc.... and appreciating your input

I have looked into that abit and have found numerous times that it is stated that they are the same bore and stroke as their mates in the automotive world.
Camshaft profiles I would suspect are different but block and heads are the same dimensions (based on info so far) cranks are cast same as automotive......
Although I have found places that the blocks and cranks are said to be "tow motor" designated which could mean something or not, I suspect not. Another example of this would be, Zamboni's, they are said to have different small block Chev motors when in fact they are the same as a car. Marine application Chev 350 blocks are 2 bolt main blocks not 4 bolt as used in truck and early muscle car application.

Obviously the gasket, freeze plug, and intake/exhaust set-ups are different along with marine application bolt on accessories dist, alt/starter (only diff is spark arrester sheilds actual casing/bolt mounting and internals in many cases are the same), fuel pump.

I was asking so I could find the internal specs ie bore, stroke, deck height, valve size, rocker ratio etc........ since marine specs I am finding are difficult to find.
I am considering making a "frankenstein" motor of sorts and was wondering if the blocks were the same between 2.5 and 3.0, I found intake/exhaust manifolds used are the same part # in many cases so I know the heads are at least similar on the intake/exhaust configuration.

 

[rodbolt]

Re: what vehicle used these engines ?

sorry to pop your pustule,but.
bondo is correct.
the 2.5(153 cid) was used in some early chevy applications in the early 60's. did not work well with marketing. the 3.0 (181 CID) was never used in an automotive application for US markets.
the automotive 2.5 used in the 80's was a pontiac design and displaced 151 CID but only shared a corperate name with the 153.
some of the 3.0 181 motors used a different head and head gasket than the 2.5 153 motors. there are about 7 intake manifold patterns.
a 350 cid buick,a 350 cid chevy,a 350 pontiac and a 350 cid oldsmobile all shared a common displacement. however they shared almost no common parts.

 

[Buttanic]

Re: what vehicle used these engines ?

The 2.5 (153) was used in the Chevy II in the mid 60's

 

[JustJason]

Re: what vehicle used these engines ?

The 2.5 (153) was used in the Chevy II in the mid 60's

I second that... it was just the basic block that was the same... the manifold was mercury's. I'd aways recomend getting marine parts (starters/alternators) but if you need to pick up a set of points or a valve cover gasket, go to a napa and tell them 67/68 chevy II 2.5L

 

[Silvertip]

Re: what vehicle used these engines ?

The 2.5 appeared in the Chevy II in 1961. That was was followed by the 194 CI six, the 230 CI six and the 250 CI six. Trucks got a 292 long stroke six. The 2.5 used the same tooling as the inline sixes but they simply sawed off two cylinders. All of these were thinwall cast engines and shared nothing with the old "Stovebolt Sixes". The 55-56-57 Chevy small block V8 did not have the side mount engine mount bosses that the 58 and up had. Other than that, enough various displacements, heads, and manifolds were available that you could build almost anything you wanted by mixing and matching parts. The sweetheart of the bunch was the 302 CI high winder in the Z28. That was the first production V8 engine to rev to 10,000 rpm (on purpose). Today, 9,000 rpm is pretty standard on NASCAR engines. Don't you wish there was a cheap outdrive that could handle that?

 

[GiMLit]

Re: what vehicle used these engines ?

Thanks for the info gentlemen.

I have resigned myself to finding a complete (in need of repair) 140 hp or just freshening the 120hp I have and putting humpty back together again. Would be great to do a 140 vs the 120. I missed a complete unit that was for sale this past week because I was misjudging the interest that it woudl get.

I am in no big rush as fall is upon us now and I have till May before I am wanting to dip the boat into the water for the first time.
I still have outdrive work, replace ball gears and intermediate shaft bearings. I want to reseal the upper and lower units and go over them for any necessary repairs. Wiring to redo along with other assorted improvments/repairs.

Cosmetically I want to repaint the upper section and replace the carpet. I pretty much have the hull stripped down ready for storage and reassembly in the spring.

#1 job now is getting my manual and then going at the outdrive so it will be ready and can be set aside for reinstallation.

Have to sell off some of the 4.3l parts that I got in the deal to finance some of these things........LOL

 

[Bondo]

Re: what vehicle used these engines ?

sorry to pop your pustule,but.

Ayuh,............ That's a Good 1 Rodbolt,.................

Location: Southern Ontario

Whereabouts GiMlit,..??..??........

I've got a running but tired 3.0l sitting on My garage floor.......
It's about 30 miles south of the 1000 Islands Bridge.............

 

[GiMLit]

Re: what vehicle used these engines ?

I am in Waterloo.

I would be interested in the 3.0l, no matter what I do I will be freshening the motor up. No sense for the minimal cost and little time it takes to not make it like new. I know there is no selling in the forums so if you have details let me know via PM and maybe we can work something out.