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SD4 lifter bore size/spacing by Lilchief
Started on: 12-31-2013 10:16 PM
Replies: 11 (401 views)
Last post by: fierosound on 01-11-2014 09:09 AM
Lilchief
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Report this Post12-31-2013 10:16 PM Click Here to See the Profile for LilchiefSend a Private Message to LilchiefEdit/Delete MessageReply w/QuoteDirect Link to This Post
Slowly getting back to financial stability , I'm starting on my sd4 again. So does a sd4 have the same size/spacing as a sbc ? I've seen that crane has a new hydraulic roller lifter that will go to 8500 rpms. Also the oil passage the same ?

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Report this Post01-01-2014 12:07 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
I used new AC Delco # HL120 hydraulic roller lifters in my Indy's SD4 engine (good to 6500rpm).
They were just the regular Iron Duke w/roller cam replacements and use the stock retainers.

According to Delco's cross reference, they are the same as used in the 4.3L V6
http://parts-catalog.acdelc...atalog=&parttype=254

Did you phone Crane?
According to their website, I only saw a mechanical lifter good for 8500rpm.
http://www.cranecams.com/lifters.htm#


Got a link to that article with a part number?
I've found people "talking" about it saying it was Crane's regular SBC lifter pushed to 8500 rpm.
It sounds like there was more to it than just the lifters. Cam and spring pressures also made a difference.


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[This message has been edited by fierosound (edited 01-11-2014).]

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fierosound
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Report this Post01-01-2014 01:02 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
GM Performance has Cadillac CTS-VR hydraulic roller lifters good to 8500 rpm for LS series V8 engines.
http://www.lingenfelter.com...de=C158#.UsRWb7SFek4
http://www.thirdgen.org/tec...rpm-capable-hyd.html

Finding the equivalent for the 4.3L V6 would be what you need.

[This message has been edited by fierosound (edited 01-04-2014).]

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Lilchief
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Report this Post01-01-2014 01:04 PM Click Here to See the Profile for LilchiefSend a Private Message to LilchiefEdit/Delete MessageReply w/QuoteDirect Link to This Post
According to Car Craft Feb 14 they proved that their (Crane) new hydraulic roller lifters will go to 8500 with no problem. 7 will make me happy. The cam they used was 268/272 dur @ .050 AND .640 lift. Springs were 225lbs close, rated at 544 lb. My cam will be less 230/232 dur @.050, .600/.605 lift. Add 20 lbs boost = fun. Lifter PN# 11532-16
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Report this Post01-01-2014 01:32 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
I looked through all the SD4 stuff I have.

Roller lifters for SD4 is Crane PN 20518-8 (now discontinued).
I don't know if that is solid or hydraulic - no description on parts list.
But Crane may be able to cross-reference that to a new number equivalent.

Found install instructions though:
http://www.cranecams.com/up...structions/240e_.pdf

Other lifters I found mentioned in SD4 engine paperwork I have:
Iskenderian (Isky) PN 1241R XL (solid roller)
Crane PN 99284-8 (hydraulic flat tappet)

[This message has been edited by fierosound (edited 01-01-2014).]

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Lilchief
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Report this Post01-01-2014 01:51 PM Click Here to See the Profile for LilchiefSend a Private Message to LilchiefEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have sent some inquiries to KRS and Summit. I'll send one to Crane also. Thanks fierosound for the insight. I'll keep you updated.
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Report this Post01-01-2014 04:48 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Lilchief:

Lifter PN# 11532-16


They appear to be just a regular retrofit kit for SBC V8.
No mention of 8500 rpm (except that 1 article everybody is referring to).
http://www.cranecams.com/pr...oduct_detail&p=24828

Best bet: Scorpion Racing hydraulic roller lifters PN SRP2114SBR
http://www.scorpionracingpr...ion-Catalog-2013.pdf

[This message has been edited by fierosound (edited 01-04-2014).]

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KurtAKX
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Report this Post01-03-2014 12:34 PM Click Here to See the Profile for KurtAKXSend a Private Message to KurtAKXEdit/Delete MessageReply w/QuoteDirect Link to This Post
The lifter bore diameter is the same between tons of GM engines- the 2.5, SBCs, 3800s, etc.

If you are using the stock "figure 8s" to prevent lifter rotation, you can get replacement lifters from any of the above engines.

My 2.5 currently has a couple SBC lifters in it.
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Report this Post01-04-2014 08:34 AM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by KurtAKX:

The lifter bore diameter is the same between tons of GM engines- the 2.5, SBCs, 3800s, etc.

If you are using the stock "figure 8s" to prevent lifter rotation, you can get replacement lifters from any of the above engines.

My 2.5 currently has a couple SBC lifters in it.



Delco didn't cross-reference to any V8s (only the 2.5 Duke and 4.3 V6) but the Melling lifter at Summit does.
2.5 lifter: http://www.summitracing.com...cations/make/pontiac

According to that he could probably use the Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine.
A set of 16 is enough for TWO engines.

In my Indy's SD4 I used the stock cage type anti-rotation guides like these.
Those are also the studs to attach the side cover. Don't know if "barred" lifters would work.

[This message has been edited by fierosound (edited 01-05-2014).]

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KurtAKX
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Report this Post01-08-2014 11:11 PM Click Here to See the Profile for KurtAKXSend a Private Message to KurtAKXEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fierosound:
Delco didn't cross-reference to any V8s (only the 2.5 Duke and 4.3 V6) but the Melling lifter at Summit does.
2.5 lifter: http://www.summitracing.com...cations/make/pontiac

According to that he could probably use the Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine.
A set of 16 is enough for TWO engines.

In my Indy's SD4 I used the stock cage type anti-rotation guides like these.
Those are also the studs to attach the side cover. Don't know if "barred" lifters would work.




http://www.northernautoparts.com/part/s4-vl115
With the link bar style, even if the OEM lifter guide boss isn't in the way, you still ha e to be concerned about lifter bore spacing or else they can bind the links

[This message has been edited by KurtAKX (edited 01-08-2014).]

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mrossum
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Report this Post01-10-2014 09:46 AM Click Here to See the Profile for mrossumClick Here to Email mrossumSend a Private Message to mrossumEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fierosound:
Delco didn't cross-reference to any V8s (only the 2.5 Duke and 4.3 V6) but the Melling lifter at Summit does.
2.5 lifter: http://www.summitracing.com...cations/make/pontiac



4.3 is a small block chevy with two cylinders chopped off. lifters are EXCATLY same as small block chevy.

once upon a time, when i was playing with the stroker 4 cyl, i had lunati solid roller lifters in it source with small block chevy part numbers

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Report this Post01-11-2014 09:09 AM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by mrossum:

4.3 is a small block chevy with two cylinders chopped off. lifters are EXCATLY same as small block chevy.
once upon a time, when i was playing with the stroker 4 cyl, i had lunati solid roller lifters in it source with small block chevy part numbers



In that case, I'd go with Cadillac CTS-VR 8500 rpm lifters for the 1998-2000 LS engine. Those are proven.
The PN 11532-16 lifters sound like regular lifters, that they managed to "push" with the right cam and valve springs.

[This message has been edited by fierosound (edited 01-13-2014).]

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