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Ericsatt76
Eric Satterthwaite
UT
(7 posts)

Registered:
09/21/2020 03:18PM

Main British Car:
2x TR7/8 Buick

WTB interim 3.9/4.2 bare block
Posted by: Ericsatt76
Date: September 21, 2020 04:37PM

I am looking for a particular rover engine block that was used in these applications:
3.9 liter, produced from April 1994 to October 1998 or
4.2 liter, produced from April 1994 to April 1996.
these blocks will bare the casting numbers HRC 2411 (just above the oil pan and just in front of the bellhousing)
and have 2.300 main journals.


turbodave
dave cox

(44 posts)

Registered:
04/30/2018 03:00PM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: turbodave
Date: October 05, 2020 11:25AM

Eric,

You also need to clarify if you want the earlier main caps or the full height main caps ( if that makes a difference to your needs) as the earlier interim blocks didn't have the full height caps (so can't be x-drilled).


Ericsatt76
Eric Satterthwaite
UT
(7 posts)

Registered:
09/21/2020 03:18PM

Main British Car:
2x TR7/8 Buick

Re: WTB interim 3.9/4.2 bare block
Posted by: Ericsatt76
Date: October 06, 2020 04:21PM

it is my understanding the HRC2411 casting was the full height caps


turbodave
dave cox

(44 posts)

Registered:
04/30/2018 03:00PM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: turbodave
Date: October 08, 2020 09:59AM

Negative. I also thought the same. The only way to be mostly sure is to buy from a 1995. I got a engine from a March 1994 hoping it was the full height and it was the regular caps but strangely had the Teflon button on the end of the cam as well.

I don't know when the changover date / number was, but Engine number 36D27262B was regular caps and 36D46550B was full height caps


turbodave
dave cox

(44 posts)

Registered:
04/30/2018 03:00PM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: turbodave
Date: October 08, 2020 10:56AM

RV8.jpg

This is of the "interim" block I pulled the front cover off that had the nylon thrust button. Definitely the later block with the cross-bolt bosses, but the same caps as the non-cross bolted blocks.


Ericsatt76
Eric Satterthwaite
UT
(7 posts)

Registered:
09/21/2020 03:18PM

Main British Car:
2x TR7/8 Buick

Re: WTB interim 3.9/4.2 bare block
Posted by: Ericsatt76
Date: October 11, 2020 04:10PM

what is the casting number


Ericsatt76
Eric Satterthwaite
UT
(7 posts)

Registered:
09/21/2020 03:18PM

Main British Car:
2x TR7/8 Buick

Re: WTB interim 3.9/4.2 bare block
Posted by: Ericsatt76
Date: October 11, 2020 05:25PM

After a little reading

it seems blocks produced from January 1994 through April 1994. have later-style block castings,and were assembled with early-style 2-bolt main bearing caps. (like the one in the picture)

blocks produced from April 1994 through October 1998. have later-style block castings, and they also have the full main bearing caps, but the caps haven't been drilled and tapped for cross-bolts.

I would take ether but prefer the later



turbodave
dave cox

(44 posts)

Registered:
04/30/2018 03:00PM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: turbodave
Date: October 11, 2020 07:39PM

I know of another who had an engine from a disco with a June '94 build date (but he didn't write down the number before having the block skimmed) and that too was the short caps. If you do machine later for the side-bolts, you'll likely need to line-bore as they do pull in slightly. In the same way that if you don't do up the side bolts on a later block, the crank will often be tight.

Have you considered www.car-part.com ? I was put onto this a while ago, and it's very helpful.

Put in 1995 discovery, then for the part, first try "engine" , then try "engine block" then "engine Core"
You can sort by distance or price.
My experience, don't bother with the live chat or email - just call the folks on the number. Do have the "stock number" or other identifier at the ready though.

And of course, you need to avoid any with rusty bores and definitely with steam-cleaned pistons as that almost certainly means there is a crack behind the liner!


Ericsatt76
Eric Satterthwaite
UT
(7 posts)

Registered:
09/21/2020 03:18PM

Main British Car:
2x TR7/8 Buick

Re: WTB interim 3.9/4.2 bare block
Posted by: Ericsatt76
Date: October 12, 2020 03:29PM

Hey Dave,

I have tried a few of those part sites most want to sell me the entire motor for an outrageous price.
Another sent me pictures charged my credit card but no block and no answer on the phone.
I had an email from a person on this site wanting me to send a money order. So I am a little cautious but ill give this one a call thanks.


turbodave
dave cox

(44 posts)

Registered:
04/30/2018 03:00PM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: turbodave
Date: October 12, 2020 07:13PM

Well, I've bought from all over the USA off that site, and never once had an issue. Lots of options within 150 miles of salt lake city (I've no idea where you are in Utah though)


tr8todd
Todd Kishbach

(373 posts)

Registered:
12/04/2009 07:42AM

Main British Car:


Re: WTB interim 3.9/4.2 bare block
Posted by: tr8todd
Date: October 13, 2020 07:56AM

I have a stack of blocks out in the garage. One of them may be what you are looking for. Are you willing to ship it from Massachusetts? If so, I will start digging thru them. Currently under a large stack of boxes and packaging material. Commonly referred to as the shipping dept by the wife and kids.


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