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Old 09-02-2020, 01:46 PM   #26
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89 Turbos aren't all 2.4?
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My knob has a big chunk of steel on it
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Old 09-02-2020, 02:25 PM   #27
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Nope. None of the 1989 US market Turbos are LH 2.4. Volvo went to LH 2.4 on the NA cars in 89, the turbo cars didn't get LH 2.4 in the US market cars until 1990. I don't know about other markets.
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Old 09-02-2020, 02:50 PM   #28
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Ahhhh.

Yeah, OP, get your timing set and make sure your base idle position is set and that indicated TDC is in fact TDC!
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Old 09-02-2020, 03:07 PM   #29
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Originally Posted by shoestring View Post
Given the number of these threads of late (2 or 3, maybe 4) where there is a complaint of no low-end torque and a common denominator of a particular cam swap, perhaps we need to ask if there might be something wrong with the grind? I know that one thread in maintenance had issues prior to said cam swap, but who knows if the original concern was fixed and then the cam swap introduced new, similar symptoms?

This all just seems a strange coincidence to me.
Someone needs to send a new IPD turbo cam to you for measuring.

They may have the same duration and lift, but the path there may be entirely different.
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Old 09-02-2020, 03:15 PM   #30
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89 Turbos aren't all 2.4?

OP didn't give a year either...
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Old 09-02-2020, 03:27 PM   #31
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I get cars all the time where there is NO PROBLEM. It could just be the cam reduced the low end more than you expected.

I have a 16T and IPD cam and the power comes on later, but much harder.
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Old 09-02-2020, 03:35 PM   #32
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Originally Posted by culberro View Post
Someone needs to send a new IPD turbo cam to you for measuring.

They may have the same duration and lift, but the path there may be entirely different.
I'd definitely want it to come from someone who's voicing this concern.
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Old 09-02-2020, 03:39 PM   #33
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I know they said there's only one grind when I emailed IPD but I am still convinced that isn't true. Intentional, or as a consequence of a change in supplier/manufacturing techniques.
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Old 09-02-2020, 04:04 PM   #34
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I know they said there's only one grind when I emailed IPD but I am still convinced that isn't true. Intentional, or as a consequence of a change in supplier/manufacturing techniques.
Based on what?
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Old 09-02-2020, 04:14 PM   #35
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I hold 19-20"hg (vacuum) at an idle with the IPD turbo cam. Also my 89 780 B230FT is lh2.2.
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Old 09-02-2020, 04:35 PM   #36
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Originally Posted by 2manyturbos View Post
Based on what?
Very different measurements from the handful I've seen degreed out. Potentially made to loose tolerances as well but that seems less likely. As opposed to A, K, T, whatever which all seem very very consistent.

Edit: and a little less than 20 inches idle vacuum seems like the norm for that cam in a B230FT.
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Old 09-02-2020, 04:39 PM   #37
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That the same person did the measurements on? That is the only way I would come to any conclusions with something like this. Even then...
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Old 09-03-2020, 12:18 AM   #38
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Originally Posted by cosbySweater View Post
What turbo do you have, is your kickdown adjusted right. There are so many variables here. Also if it's a stock frame turbo, be it 13c 15g or whatever just throw a stock t cam in it. The ipd cam is a waste of time with one of those tiny turbos
Its a 12b, replaced the cable a few hundred miles ago. Afaik if it's adjusted incorrectly you'll either hang in gear or not get downshift when you stomp on it. I loosen it until I hear that "clunk" from the trans. The greenbook instructions make no sense. Can that effect power off the line?

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Ahhhh.

Yeah, OP, get your timing set and make sure your base idle position is set and that indicated TDC is in fact TDC!
What do you mean by base idle position? The throttle switch sounds like it's adjusted properly but I'll probably take it all apart anyway to clean and re-adjust. Going to take the lower cover off this weekend and make sure that all the marks are lined up. Should have done that from the start.

Question: should the stop on the throttle spool touch the bracket at WOT? IIRC on my d24t it was supposed to be limited by the throttle linkage, not the physical stops.

Also, where are people getting new throttle cables? Mine has a fair amount of slack, but I can't find a new one anywhere. The car is an 89, I thought that would show up in my signature but I don't see it here.

Here is my 0-60

https://www.youtube.com/watch?v=vjCtKdaAFXQ

Also, this is not a new iPd cam. In fact, I don't have any proof its an ipd cam other than the guy I bought it from said it was. No reason not to believe him, he had a few built Volvos (including a sbf swapped amazon) and was Swedish. I don't believe it had any markings on it when I installed it.
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Old 09-03-2020, 01:15 AM   #39
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No problem found.
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Old 09-03-2020, 01:30 AM   #40
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Looks reasonable (if slow) to me. Not sure why your car is banging off the limiter.
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Old 09-03-2020, 06:27 AM   #41
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Let's not get in a pissing contest about the specs on the IPD Turbo cam. The focus here is to try to help the op with his original concern. We ourselves have never measured one KNOWN to be an IPDT, just one we strongly believe to be. On the flip side, the paper trail from them has many gaps in it, so who knows?

That said, with the additional info and video from post #38, it's difficult to say that this isn't operating as designed. It doesn't look horrendous to me, but compared to the T cam, I can see how you might be disappointed with the change.

Last edited by shoestring; 09-03-2020 at 06:36 AM..
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Old 09-03-2020, 11:34 AM   #42
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1st, yes, your kickdown is a bit tight perhaps. The trans should shift before it hits the limiter.
2nd, for being a little 12b on there, that's pretty respectable. Yes, the turbo cam does lose a little right off the line, but it makes up for it the rest of the way along.

I would definitely double-check everything is lined up, set the cam to 4* advanced, and throw an MBC (ball and spring, not a bleed style) on to help the boost ramp up a little faster.
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Old 09-03-2020, 02:04 PM   #43
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I don't know what IPD is turning out these days, however, I have driven 2 cars with 13C turbos on them with the IPD Turbo cam installed and both pulled hard right off of idle all the way to 6,000 RPM. They also had good idle quality and good vacuum. It isn't that hot of a grind. They copied the V cam specs when they made their turbo cam.
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Old 09-03-2020, 02:52 PM   #44
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Originally Posted by 2manyturbos View Post
I don't know what IPD is turning out these days, however, I have driven 2 cars with 13C turbos on them with the IPD Turbo cam installed and both pulled hard right off of idle all the way to 6,000 RPM. They also had good idle quality and good vacuum. It isn't that hot of a grind. They copied the V cam specs when they made their turbo cam.
This is what I'm lead to believe, at least as far as characteristics go, and why I raised my hand to say that perhaps cam timing as ground may be an issue. From personal experience I only am familiar with the V15T, and that sacrifices very little from idle to well extend the effective rpm range.

Also, from the video, it doesn't look too bad.
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Old 09-03-2020, 11:31 PM   #45
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I checked the washer on crank timing gear today after work and it looked good. I don't know why they put that on the outer washer, makes it much harder to see. Anyway, reset the cam to +4* and reset ignition timing to ~12*, and it runs much better with decent low end. I must have been setting spark timing first, and then adjusting the cam gear (subsequently messing up spark timing), I'm not sure but the only explanation I can think of. Also loosened kick down, no more bouncing off rev limiter. I think with an mbc this thing will be properly fun to drive. Thanks to everyone who commented.

One observation: with cam timing at +4*, the least amount of spark timing I could get was ~12* before the distributor was fully rotated/hitting the stop. In other words, I couldn't adjust it to run less timing. Is that normal?

Last edited by adamdrives; 09-04-2020 at 01:58 AM..
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Old 09-04-2020, 01:03 AM   #46
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That does seem a little odd on the timing, but 12* should be just fine.

Glad you got it more to your liking!
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Old 09-04-2020, 06:24 AM   #47
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