1G AJUSA Hydraulic Lash Adjuster Comparison

[IvanovBG]

Hi guys,

I would like to buy a new set of lifters for my 1G DSM, as my current ones tick a lot until the engine warms up.
The options I have locally are limited and the best ones I was able to find are a couple of AJUSA lifters. They look virtually the same, but for some reason one is more than twice the price. Individually it's $33 vs $14 per lifter, which adds up and I'd rather get the cheaper ones, as it's the same manufacturer.
I send an email to the AJUSA support as they weren't any available dimensions on their site, and this is what I got as a reply:

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The main difference seems to be in the extended height(altura extendido) which is about 2.1mm, but the compressed height(altura comprimido) difference is just 0.4mm.
This is how they compare visually:
85011000

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85004200

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From an older thread I read that MD149309 was the original style lifter, and that MD377054 is a revised version, but neither of these AJUSA lifters have a small oil hole at the top like a 1G lifter. If anything, the cheaper one looks closer to those Topline lifters that are available in the US, but I couldn't find anything online about their dimensions to compare.
My main concern here is if such small differences in length could cause an issue with the valves not closing all the way?

 

[FIBA M - EC17PSE]

That cap with only 4 crimps looks half off already, i would be concerned about that also! Why not opt for some gsc lifters? They are well prices and work great. Many have been using them for years including myself. Under $200 for a set last time i looked qnd were good quality

 

[IvanovBG]

That cap with only 4 crimps looks half off already, i would be concerned about that also! Why not opt for some gsc lifters? They are well prices and work great. Many have been using them for years including myself. Under $200 for a set last time i looked qnd were good quality

A couple of hours ago I called a local autoparts store in my home town and asked about those cheaper Ajusa 85004200 lifters. To my unfortunate surprise, only 5 of them are in stock locally for an $11 price and if I'd like to order more, the price is double because they'll be sourcing them from an external supplier. I did some calculations and it would end up being the equivalent of $311 for 16 of them.

So in the end, I might as well order Topline or GSC lifters from Extreme PSI or STM, but the delivery is at least $80 and I read there could be unexpected import fees, so I'm worried how much it could end up being.

Either way, do you know how much the lifter length matters? I'm assuming there should me a maximum length that it can be, before it becomes an issue.

 

[donniekak]

We only use 1g small hole lifters in big builds. The other non oem lifters can bleed down at high spring pressures and not give you full lift.

 

[FIBA M - EC17PSE]

A couple of hours ago I called a local autoparts store in my home town and asked about those cheaper Ajusa 85004200 lifters. To my unfortunate surprise, only 5 of them are in stock locally for an 11$ price and if I'd like to order more, the price is double because they'll be sourcing them from an external supplier. I did some calculations and it would end up being the equivalent of 311$ for 16 of them.

So in the end, I might as well order Topline or GSC lifters from Extreme PSI or STM, but the delivery is at least 80$ and I read there could be unexpected import fees, so I'm worried how much it could end up being.

Either way, do you know how much the lifter length matters? I'm assuming there should me a maximum length that it can be, before it becomes an issue.

Length is not a major concern if its past oem length thats fine, its if its not compressing the correct amount then you worry.

GSC will be good as its got a stiffer spring inside also which helps if no fluid is in there but adding a kiggly regulator also aids this oil flow to the head better.

I dont know on other brands but have seen people use them. Jafro used the 1g and counter sunk the hole ( i believe it was him ) and this might help a bit more from the clogging but his video will go into that as its been a while i seen this from him.

 

[IvanovBG]

We only use 1g small hole lifters in big builds. The other non oem lifters can bleed down at high spring pressures and not give you full lift.

Length is not a major concern if its past oem length thats fine, its if its not compressing the correct amount then you worry.

GSC will be good as its got a stiffer spring inside also which helps if no fluid is in there but adding a kiggly regulator also aids this oil flow to the head better.

I dont know on other brands but have seen people use them. Jafro used the 1g and counter sunk the hole ( i believe it was him ) and this might help a bit more from the clogging but his video will go into that as its been a while i seen this from him.

Thanks for the advice!

These GSC ones seem like a good option, but with this stiffer spring, would they be suitable for a non turbo power output? I know that stiffer valve springs are better for high power engines, does the same go for the lifter springs, or it doesn't matter? I doubt my car even makes 130HP at the wheels. It's never been dynoed as I don't really see a point without any mods.

 

[FIBA M - EC17PSE]

Thanks for the advice!

These GSC ones seem like a good option, but with this stiffer spring, would they be suitable for a non turbo power output? I know that stiffer valve springs are better for high power engines, does the same go for the lifter springs, or it doesn't matter? I doubt my car even makes 130HP at the wheels. It's never been dynoed as I don't really see a point without any mods.

Dont matter what 4G its in. Its just a lifter doing a lifters job. It does not care if its turbo or non turbo

 

[IvanovBG]

Thanks! I'll seriously consider getting these GSC lifters.

 

[ist dwa]

Small hole oem lifters are king. I have kept several good kits over the years.

 

[IvanovBG]

Small hole oem lifters are king. I have kept several good kits over the years.

I'm not sure if the current ones I have are 1G style lifters. But either way, I'll keep them, as you never know what you might end up needing for an older car. A month ago I broke the throttle body idle switch (MD614216) by pulling on the wire by accident. The car ran really rough without it, and it's a good thing I had another one from a different throttle body. One of these new is like $150.

 

[jed344]

Like some have said. You can correct the tick with a old school mod on the oil feed area on the head around the head stud. We have used the revised quite far safely. Myself alone to well over 600whp. Yes i agree though with the small hole lifters. Those i have used in some quite serious builds making north of 750whp and lots of boost and rpm and worked well. A set of revised would do ya just fine.

 

[IvanovBG]

Like some have said. You can correct the tick with a old school mod on the oil feed area on the head around the head stud. We have used the revised quite far safely. Myself alone to well over 600whp. Yes i agree though with the small hole lifters. Those i have used in some quite serious builds making north of 750whp and lots of boost and rpm and worked well. A set of revised would do ya just fine.

I'm really tempted to get a set of the GSC lifters, but keeping in mind I would need to pay at least $80-90 just for the delivery to Europe, I'm more incline to get the revised Topline lifters from STM. They should be fine for a stock power output.

 

[jed344]

The Topline will be fine. Last I knew the company that makes the revised makes them all and then the others who sell them put there names on them. I personally have used the Topline revised lifters to mid 600whp and rev'd to 8500 rpm. This is with a 62mm at 34-35psi and GSC S2 cams with Kiggly high pressure springs. So they are seeing some abuse. Granted I did notice a tick last time I had car out so need to dig into that and maybe the lifters are not happy, if that's true then fine we have still used those Topline in tons of cars under 500 for years no issues and I just found whats to much.

 

[IvanovBG]

Thanks for sharing this information! If they were able to handle that much power, then the factory rated 150hp should be nothing.